The String method is n-squared and overwrites its receiver.
Fix both issues, with only a slight loss of clarity.
Fixes#28773
Change-Id: I588f69d4cbd72931b28b984671512834473bd466
Reviewed-on: https://go-review.googlesource.com/c/151217
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Fixes#27619
Change-Id: If18df696c0778efe894a4a249d4964db1b02e5d6
Reviewed-on: https://go-review.googlesource.com/c/150159
Reviewed-by: Yuval Pavel Zholkover <paulzhol@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This text changed in CL 139099 to add "explicit" in front of "conversion".
But now "explicit conversion or assignment" reads like it might mean
"explicit [conversion or assignment]" when what is meant is
"[explicit conversion] or assignment". To make clear that explicit does
not apply to assignment, use "assignment or explicit conversion".
Change-Id: I8ff7a5b3ecd9f562793502fa6808242f22264f28
Reviewed-on: https://go-review.googlesource.com/c/149340
Reviewed-by: Robert Griesemer <gri@golang.org>
Adjusted spec to explicitly define the string length as the
number of bytes of the string; the prose now matches the prose
for arrays. Made analogous change for slices.
Fixes#28736.
Change-Id: I47cab321c87de0a4c482f5466b819b2cc8993fd1
Reviewed-on: https://go-review.googlesource.com/c/149077
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
In ARM64 ABI, R18 is the "platform register", the use of which is
OS specific. The OS could choose to reserve this register. In
practice, it seems fine to use R18 on Linux but not on darwin (iOS).
Rename R18 to R18_PLATFORM to prevent accidental use. There is no
R18 usage within the standard library (besides tests, which are
updated).
Fixes#26110
Change-Id: Icef7b9549e2049db1df307a0180a3c90a12d7a84
Reviewed-on: https://go-review.googlesource.com/c/147218
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Effective Go and the FAQ still had some instances which showed the command line
usage of godoc. Changed them to use go doc.
Updates #25443
Change-Id: If550963322034e6848bc466f79e968e7220e4a88
Reviewed-on: https://go-review.googlesource.com/c/145222
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
A prior attempt at addressing the issue got bogged down in an
endless conversation around the subtleties of Read semantics.
Let's not go there.
Instead, we put the issue to bed, perhaps not in perfect comfort
but well enough, by moving a line of the example so that even
if there is a "benign" error as the issue suggests, the loop
terminates with n and err correctly set.
Fixes#27818
Change-Id: I4a32d56c9e782f17578565d90b22ce531e3d8667
Reviewed-on: https://go-review.googlesource.com/c/143677
Reviewed-by: Ian Lance Taylor <iant@golang.org>
As of golang.org/cl/141857 the import path has changed from
golang.org/x/tour/gotour to golang.org/x/tour
Change-Id: Ib54ab2e50188ef66c8a5c45136babfa49ad6934a
Reviewed-on: https://go-review.googlesource.com/c/141917
Run-TryBot: Andrew Bonventre <andybons@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
The spec currently provides a syntactic rule for receiver base types,
and a strict reading of those rules prohibits the use of type aliases
referring to pointer types as receiver types.
This strict interpretation breaks an assumed rule for aliases, which
is that a type literal can always be replaced by an alias denoting
that literal.
Furthermore, cmd/compile always accepted this new formulation of the
receiver type rules and so this change will simply validate what has
been implemented all along.
Fixes#27995.
Change-Id: I032289c926a4f070d6f7795431d86635fe64d907
Reviewed-on: https://go-review.googlesource.com/c/142757
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
I've linked the gophers discord. It's a well administered discord which already got many members, but it was never officially linked. For many people it's a quality proof if a discord is linked on the official page. I think there are much more people out there, who would prefer to use discord instead of slack or irc.
The discord already got many users without even being promoted, so it's very likely there are many people who are interested in a discord, but they don't want to use unofficial discords. This discord shouldn't be seen as a competitor for the slack, it's a platform for those, who don't want to use slack.
Change-Id: Ib1ee7173f394b810f5cccf67b498485ecbf8a7db
GitHub-Last-Rev: 286ebad994
GitHub-Pull-Request: golang/go#24176
Reviewed-on: https://go-review.googlesource.com/c/97718
Reviewed-by: Andrew Bonventre <andybons@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
The spec used the term "conversion" somewhat indiscriminately for
explicit conversions that appear literally in the source, and implicit
conversions that are implied by the context of an expression.
Be clearer about it by defining the terms.
Also, state that integer to string conversions of the form string(x)
are never implicit. This clarifies situations where implicit conversions
might require an integer to change to a string (but don't and never have
done so). See line 3948.
Fixes#26313.
Change-Id: I8939466df6b5950933ae7c987662ef9f88827fda
Reviewed-on: https://go-review.googlesource.com/c/139099
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This hasn't been true at least since 1.4. Until golang.org/cl/137235
they were lumped together into a random compile unit, now they are
assigned to the correct one.
Change-Id: Ib66539bd67af3e9daeecac8bf5f32c10e62e11b1
Reviewed-on: https://go-review.googlesource.com/138415
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: David Chase <drchase@google.com>
Fixes#27802.
Change-Id: I7ea9f7279300a55b0cb851893edc591a6f84e324
Reviewed-on: https://go-review.googlesource.com/136758
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
It's worth clarifying that the language is called "Go".
Fixes#27616.
Change-Id: Ie4a9cb5e7e6afa437c60e06914125ef7490f27d0
Reviewed-on: https://go-review.googlesource.com/135517
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
In Go 1.11, cmd/go gained support for the GOFLAGS environment variable.
It was added and described in detail in CL 126656.
Mention it in the Go 1.11 release notes, link to the cmd/go documentation,
and add more details there.
Fixes#27282.
Change-Id: Ifc35bfe3e0886a145478d36dde8e80aedd8ec68e
Reviewed-on: https://go-review.googlesource.com/135035
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Rob Pike <r@golang.org>
The discussion list was buried beneath the developer mailing list.
This change puts the discussion list first and gives it a more
prominent heading.
Change-Id: I8dcb4af98e454ae3a0140f9758a5656909126983
Reviewed-on: https://go-review.googlesource.com/134136
Reviewed-by: Ian Lance Taylor <iant@golang.org>
The benchstat tool computes statistics about benchmarks, including
whether any differences are statistically significant. Recommend its use
in commit messages of performance-related changes rather than the
simpler benchcmp tool.
Change-Id: I4b35c2d892b48e60c3064489b035774792c19c30
Reviewed-on: https://go-review.googlesource.com/132515
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
The wiki page has recently been created, and at this time it's
just a stub. It's expected that support for WebAssembly will be
evolving over time, and the wiki page can be kept updated with
helpful information, how to get started, tips and tricks, etc.
Use present tense because it's expected that there will be more
general information added by the time Go 1.11 release happens.
Also add link to https://webassembly.org/ in first paragraph.
Change-Id: I139c2dcec8f0d7fd89401df38a3e12960946693f
Reviewed-on: https://go-review.googlesource.com/131078
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
The unexported field is hidden from reflect based marshalers, which
would break otherwise. Also, make it return an error, as there are
multiple reasons it might fail.
Fixes#27125
Change-Id: I92adade2fe456103d2d5c0315629ca0256953764
Reviewed-on: https://go-review.googlesource.com/130535
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Complete CL117178 removing all references to GitHub, and leaving
a small note to make sure we remember that it's not supported.
Change-Id: Id4257515a864875808fa7a67f002ed52cfd635a3
Reviewed-on: https://go-review.googlesource.com/130395
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Also, rename an HTML element ID to avoid duplicate.
Fixesgolang/go#27038
Change-Id: Icc064a1cc86ddc794fc085d98b4cde3effff8ad0
Reviewed-on: https://go-review.googlesource.com/129635
Reviewed-by: Andrew Bonventre <andybons@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
It's already half gone and later will be all gone.
It's not worth explaining in an introduction doc.
Fixes#24506
Updates #4719
Change-Id: Ie48128b3aa090d84e0e734aa45f14a4480292913
Reviewed-on: https://go-review.googlesource.com/129679
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
For contributors looking for new issues to contribute to it can be
difficult to find issues that need a fix and don't already have a fix
being considered. There are several labels that help guide the way
already, like `NeedsFix`, `HelpWanted`. But many issues with this label
will already have a CL. For new contributors this can be especially
difficult.
Fixes#26494
Change-Id: Ifd38ea65e362b4c580207a06f959646e49ac594f
GitHub-Last-Rev: 6d2b54447b
GitHub-Pull-Request: golang/go#26516
Reviewed-on: https://go-review.googlesource.com/125355
Reviewed-by: Andrew Bonventre <andybons@golang.org>
Run-TryBot: Andrew Bonventre <andybons@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Also updates the bundled http2 to x/net/http2 git rev 49c15d80 for:
http2: revert CL 107295 (don't sniff Content-type in Server when nosniff)
https://golang.org/cl/126895Fixes#24795
Change-Id: I6ae1a21c919947089274e816eb628d20490f83ce
Reviewed-on: https://go-review.googlesource.com/126896
Reviewed-by: Damien Neil <dneil@google.com>
The FAQ already has a link to the release notes and the go command docs.
Add a link from the release notes to the go command docs, to ensure that
people ultimately end up there (the docs that then signpost
people to the relevant other help docs).
Updates #25517.
Change-Id: I284c84af712d4519c59f7ca6c396b05a4c967cee
Reviewed-on: https://go-review.googlesource.com/126777
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Add the tools section with a Gofmt sub-section, just like in
go1.10.html. Instead of copying the two last paragraphs from 1.10, which
warn users about the hidden complexity of enforcing gofmt, move that to
go/format and link to it.
While at it, remove a duplicate "Tools" header that was likely added by
accident.
Fixes#26228.
Change-Id: Ic511c44b2b86f82a41f2b78dd7e7482d694b6c62
Reviewed-on: https://go-review.googlesource.com/122295
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Change-Id: I3bcf8850ad3873f2627ba017cbfb8b7a8c9cf467
Reviewed-on: https://go-review.googlesource.com/125256
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
The backwards incompatible changes were undone in CL 120355, while still
preserving the additions needed for assignments in templates to work.
Change-Id: Ie76a798916ef36509c88e171a04bb2cf2a3d7e8e
Reviewed-on: https://go-review.googlesource.com/124917
Reviewed-by: Andrew Bonventre <andybons@golang.org>
Completely replace the opener, which had become not only stale
but bad, expand the discussion of the gopher, and generally provide
prose more connected to the present than to the programming world
of 2007.
Fixes#26107
Change-Id: I5e72f0c81e71d1237fe142dc26114991329a6996
Reviewed-on: https://go-review.googlesource.com/124616
Reviewed-by: Ian Lance Taylor <iant@golang.org>
The final API uses 'region' instead of 'span' from the proposal.
Change-Id: I305da891a360596fff89b10bc6de3090289b5396
Reviewed-on: https://go-review.googlesource.com/124815
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Text based on CL 124655.
Change-Id: I7c4866ce829cb28a4c60cd8ced3ef99047a38c54
Reviewed-on: https://go-review.googlesource.com/124711
Reviewed-by: Austin Clements <austin@google.com>
This doesn't auto-deploy to golang.org, only tip.golang.org.
Change-Id: I112743ada2c1393e21edcc9075127f40da9e6270
Reviewed-on: https://go-review.googlesource.com/124755
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Mention the change in the behavior of go test -memprofile.
Change-Id: I0384f058298bd8fcfd2d97996464d46b4e419938
Reviewed-on: https://go-review.googlesource.com/124656
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Missed in CL 124516.
Change-Id: I6488196c8392987d69eca832ab4969aaafe1a26c
Reviewed-on: https://go-review.googlesource.com/124658
Reviewed-by: Ian Lance Taylor <iant@golang.org>
The change to make the runtime use libSystem.so macOS instead of
direct kernel calls applies to iOS as well.
Change-Id: I97ea86452ac5f7433aea58bbd3ff53a2eb2835e0
Reviewed-on: https://go-review.googlesource.com/124657
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This should have been added to the repo after Renee's Gophercon
keynote. I will link to it from the FAQ.
Change-Id: I0e5b88690e288827591d27b99420d3a449f7f662
Reviewed-on: https://go-review.googlesource.com/124615
Reviewed-by: Andrew Gerrand <adg@golang.org>
Bring it up to date with recent terminology, mention new approaches
such as in Rust, and link to the new blog post.
Change-Id: I1d0b121e6f8347c3cf2c8ca0d8adc8285ce59ef1
Reviewed-on: https://go-review.googlesource.com/124475
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Since Go1.10, go test runs vet on the tests before executing them.
Moreover, the vet tool typechecks the package under analysis with
go/types before running. In Go1.10, a typechecking failure just caused
a warning to be printed. In Go1.11, a typechecking failure will cause
vet to exit with a fatal error (see Issue #21287).
This means that starting with Go1.11, tests that don't typecheck will
fail immediately. This would not normally be an issue, since a test
that doesn't typecheck shouldn't even compile, and it should already
be broken.
Unfortunately, there's a bug in gc that makes it accept programs with
unused variables inside a closure (Issue #3059). This means that a
test with an unused variable inside a closure, that compiled and
passed in Go1.10, will fail in the typechecking step of vet starting
with Go1.11.
Explain this in the 1.11 release notes.
Fixes#26109
Change-Id: I970c1033ab6bc985d8c64bd24f56e854af155f96
Reviewed-on: https://go-review.googlesource.com/121455
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This is close to a complete rewrite, as the content was pretty old.
The CL includes links to the Wiki for information about companies
using Go, a new section about IDEs and editors¹, and a restatement
of the foreign function interface story. It also modernizes and
expands a little on the use of Go inside Google.
¹ Ed is the standard editor.
Change-Id: I5e54aafa53d00d86297b2691960a376b40f6225b
Reviewed-on: https://go-review.googlesource.com/123922
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Significant surgery done to the Versioning section, bringing it closer to
modern thinking.
Also add a question about constants.
Update #26107.
Change-Id: Icf70b7228503c6baaeab0b95ee3e6bee921575aa
Reviewed-on: https://go-review.googlesource.com/123918
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Changes are mostly about making more about now than about the past,
changing some verb tenses, and mentioning gollvm (which should
be pronounced "gollum" if you ask me).
Update #26107
Change-Id: I6c14f42b9fc2684259d4ba8bc149d7ec9bb83d15
Reviewed-on: https://go-review.googlesource.com/123917
Reviewed-by: Ian Lance Taylor <iant@golang.org>
The old text was written when it was only 1 by default, which
changed a long time ago.
Also add a note that GOMAXPROCS does not limit the total
number of threads.
Change-Id: I104ccd7266d11335320a4d7f5671fb09ed641f88
Reviewed-on: https://go-review.googlesource.com/123916
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Many parts of the FAQ are dusty and need cleaning up.
This is the first of a series of changes to bring it up to date.
Since it was first written at the time of release, some of the
ideas and background have changed, and some historical
remarks are largely irrelevant now.
Update #26107.
Change-Id: I1f36df7d8ecc8a1a033d5ac4fa1edeece25ed6b4
Reviewed-on: https://go-review.googlesource.com/123496
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Change "have to" to "need to" for clarity and to avoid a
peculiar English idiom.
Change-Id: Iec2b1f841d0353dd7925f8f934fe82d4ed059d7d
Reviewed-on: https://go-review.googlesource.com/123495
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Also, remove some test code that was trying to work on XP and fix up
some comments referencing XP.
Fixes#26191
Updates #23380
Change-Id: I0b7319fe1954afddb22d396e5ec91d8c960268d8
Reviewed-on: https://go-review.googlesource.com/123415
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
It will not be present in go1.11beta1 but will be present
in subsequent releases.
Change-Id: I298fb682945345bb4a34ec83802fd644f75bdd98
Reviewed-on: https://go-review.googlesource.com/120756
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This change fixes a typo in doc/contribute.html (afects -> affects)
and rewords a few slightly akward sentences.
Change-Id: I6bfbacba0de29464fce134b0fdaf3898a97b8d57
Reviewed-on: https://go-review.googlesource.com/120105
Reviewed-by: Rob Pike <r@golang.org>
It's more common to specify GOOS/GOARCH values in that order,
rather than the inverse. Fix the order.
Updates #18892.
Change-Id: I8551508599e019f6617dc007397b562c9926418d
Reviewed-on: https://go-review.googlesource.com/120057
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
The git clone url should be a Gerrit host and not Github, otherwise the
codereview command will fail.
git-codereview: failed to load Gerrit origin: git origin must be a Gerrit host, not GitHub: https://github.com/golang/go
Change-Id: I62f62c86ee6dce0720a844fc56340135dfae8405
Reviewed-on: https://go-review.googlesource.com/117178
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
The name was "Mac OS X" during versions 10.0 to 10.7.
It was renamed to "OS X" starting from 10.8 until 10.11.
The current name is "macOS" starting with 10.12. [1]
Previous changes (e.g., CL 47252) updated "Mac OS X" to macOS
in some places, but not everywhere. This CL updates remaining
instances for consistency.
Only the pages that display current information were updated;
historical pages such as release notes for older Go releases,
past articles, blog posts, etc., were left in original form.
Rename the "#osx" anchor to "#macos" on /doc/install page,
along with the single reference to it on the same page.
Add an empty div with id="osx" to not break old links.
Update minimum macOS version from 10.8 to 10.10 per #23122.
[1]: https://en.wikipedia.org/wiki/macOS#History
Updates #23122.
Change-Id: I69fe4b85e83265b9d99f447e3cc5230dde094869
Reviewed-on: https://go-review.googlesource.com/119855
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
In an effort to help others avoid the issues I've hit due to lack of
symlink support under GOPATH, I've added a note of warning to the
Workspaces section.
I have not changed the contents of go help gopath, because on reflection
it seems this change alone may be sufficient.
Fixes#21320
Change-Id: Ib8969bf12cecad878e89ff66b5864bbf3caaf219
Reviewed-on: https://go-review.googlesource.com/61930
Reviewed-by: Ian Lance Taylor <iant@golang.org>
After CL 113016 the "a" article is no longer necessary.
Change-Id: I5a80a210bd2b9eedd73d5f9f3f338d7f22c29ea6
Reviewed-on: https://go-review.googlesource.com/113355
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Mostly just formatting and minor cleanup:
- regularize HTML (add </p> etc.)
- remove all errors caught by tidy
- start all sentences on new line for easy editing
Some wording changes, but there will be more to come.
It seemed there were already enough edits to send it out.
Update #24487
Change-Id: I613ce206b1e8e3e522ecb0bbcd2acb11c4ff5bae
Reviewed-on: https://go-review.googlesource.com/113015
Reviewed-by: Ian Lance Taylor <iant@golang.org>
The phrase "couple X" is considered colloquial, so make that "a couple of X".
Also move the start of a sentence to a new line in a couple of places
for easier editing, in one place thereby removing two spaces after a period.
Change-Id: If5ef05eb496afc235f8f0134c4e7346375a65181
Reviewed-on: https://go-review.googlesource.com/112176
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
The videos on the front page are always the same width, regardless of
the viewport width. These changes let the video fill the space given
to its container regardless of layout. It uses the standard hack for
making iframes responsive, but the videos are loaded at random and do
not have uniform aspect ratios so that information is injected into the
DOM using custom properties. If these are not supported, it falls back
to the same layout present before this change.
Note: this change also requires CL 108678 to complete the fix,
though either CL without the other is harmless.
Updates #24997.
Change-Id: I2f93dc21ffe01d99ce0e175e9dd0e3d486fddc9f
Reviewed-on: https://go-review.googlesource.com/108677
Run-TryBot: Andrew Bonventre <andybons@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Andrew Bonventre <andybons@golang.org>
In the binary sizes FAQ, the approximate size of a Go hello world
binary was said to be 1.5MB (it was about 1.6MB on go1.7 on
linux/amd64). Sadly, this is no longer true. A Go1.10 hello world is
2.0MB, and in 1.11 it'll be about 2.5MB.
Just say "a couple megabytes" to stop this dance.
Change-Id: Ib4dc13a47ccd51327c1a9d90d4116f79597513a4
Reviewed-on: https://go-review.googlesource.com/110069
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
mips64 softfloat support is based on mips implementation and introduces
new enviroment variable GOMIPS64.
GOMIPS64 is a GOARCH=mips64{,le} specific option, for a choice between
hard-float and soft-float. Valid values are 'hardfloat' (default) and
'softfloat'. It is passed to the assembler as
'GOMIPS64_{hardfloat,softfloat}'.
Change-Id: I7f73078627f7cb37c588a38fb5c997fe09c56134
Reviewed-on: https://go-review.googlesource.com/108475
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
The example in the 'A web server' section of the effective Go document
uses Google's image charts API (at chart.apis.google.com).
The service is now deprecated (see developers.google.com/chart/image),
and visiting http://chart.apis.google.com gives a 404. The endpoint is
still active, so the Go code in the example still works, but there's
no point in making the link clickable by the user if the page returns
a 404.
Change the element to `<code>`.
Change-Id: Ie67f4723cfa636e3dc1460507055b6bbb2b0970c
Reviewed-on: https://go-review.googlesource.com/109576
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
The existing text makes it seem like there's no way
to use GitHub over HTTPS. There is. Explain that.
Also, the existing text suggests explicit checkout into $GOPATH,
which is not going to work in the new module world.
Drop that alternative.
Also, the existing text uses pushInsteadOf instead of insteadOf,
which would have the effect of being able to push to a private
repo but not clone it in the first place. That seems not helpful,
so suggest insteadOf instead.
Fixes#18927.
Change-Id: Ic358b66f88064b53067d174a2a1591ac8bf96c88
Reviewed-on: https://go-review.googlesource.com/107775
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
The language spec requires the RHS operand of shift expressions to be unsigned integers.
The changes in CL 60230 and the related CL 81277 refer to a variable s of type uint.
The "untyped constant" here refers to 1.0, not s.
Change-Id: Id2b884816af7f79f453afcb8c34ade2d34e18bc2
GitHub-Last-Rev: b26c853cae
GitHub-Pull-Request: golang/go#24989
Reviewed-on: https://go-review.googlesource.com/108676
Reviewed-by: Robert Griesemer <gri@golang.org>
The patch rewrites the content of doc.go file. The file describes some
general rules of the mapping between Go assembly syntax and GNU syntax.
And it gives some Go assembly examples and corresponding GNU assembly
examples.
The patch changes the doc.go to use standard doc comment format so that
the link https://golang.org/cmd/internal/obj/arm64/ can display it.
Assembly document framework is mainly contributed by Eric Fang <Eric.Fang@arm.com>
Documentation work is contributed by Eric Fang and Fannie Zhang <Fannie.Zhang@arm.com>
Change-Id: I8b3f6d6c6b91afdc2c44602e8f796beea905085e
Reviewed-on: https://go-review.googlesource.com/102055
Reviewed-by: Rob Pike <r@golang.org>
The previous CL, 107197, overclarified the need for short subject
lines. Tweak the wording to be a guideline (keep it short) rather
than a limit (76 characters), which is more the Go way.
Also be strict about avoiding markup language.
Change-Id: I0da1132db8d86052647d96f1caac60289f2209ce
Reviewed-on: https://go-review.googlesource.com/107378
Reviewed-by: Mohit Bajoria <mohitbajo36@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
As suggested by Ian on the issue, just use past releases to avoid any
confusion regarding current and future releases.
Fixes#23891
Change-Id: Ie513cd3e15aa04822898be57f71976e6fe6bd816
Reviewed-on: https://go-review.googlesource.com/107078
Reviewed-by: Andrew Bonventre <andybons@golang.org>
Fixes#24852
Change-Id: I71d0d7f75108bf4ad606733a45bb71baa66a4e91
Reviewed-on: https://go-review.googlesource.com/107197
Reviewed-by: Alberto Donizetti <alb.donizetti@gmail.com>
Reviewed-by: Giovanni Bajo <rasky@develer.com>
Point out that one can just run the commands now; it's not necessary
to log out first.
Change-Id: I48d0cc0273d97ba54ce59b3a3bbcae0b5af9aaef
Reviewed-on: https://go-review.googlesource.com/106195
Reviewed-by: Ian Lance Taylor <iant@golang.org>
If one is somewhat new to the command line or shell, it might be
surprising that changes applied to a file like $HOME/.profile will
seemingly not take effect, even if new shells are started.
Add a note about how shells usually only load these when the user logs
into a machine, to minimize the amount of people stuck and confused by
this.
Fixes#24756.
Change-Id: Ic68d8c97933f3f080b151a107633ecad76a163a4
Reviewed-on: https://go-review.googlesource.com/105557
Reviewed-by: Agniva De Sarker <agniva.quicksilver@gmail.com>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
I've reorganized the guide and rewritten large sections.
The structure is now more clear and logical, and can
be understood and navigated using the summary displayed at
the top of the page (before, the summary was confusing because
the guide contained H1s that were being ignored by the summary).
Both the initial onboarding process and the Gerrit
change submission process have been reworked to
include a concise checklist of steps that can be
read and understood in a few seconds, for people
that don't want or need to bother with details.
More in-depth descriptions have been moved into
separate sections, one per each checklist step.
This is by far the biggest improvement, as the previous
approach of having to read several pages just to understand
the requires steps was very scaring for beginners, in
addition of being harder to navigate.
GitHub pull requests have been integrated as a different
way to submit a change, suggested for first time contributors.
The review process has been described in more details,
documenting the workflow and the used conventions.
Most miscellanea have been moved into an "advanced
topics" chapter.
Paragraphs describing how to use git have been removed
to simplify reading. This guide should focus on Go contribution,
and not help users getting familiar with git, for which many
guides are available.
Change-Id: I6f4b76583c9878b230ba1d0225745a1708fad2e8
Reviewed-on: https://go-review.googlesource.com/93495
Reviewed-by: Rob Pike <r@golang.org>
This reverts commit 4b06d9d727.
Reason for revert: It's a reference to a legendary article
from the Journal of Irreproducible Results.
Updates golang/go#24451
Change-Id: I0288177f4e286bd6ace5774f2e5e0acb02370305
Reviewed-on: https://go-review.googlesource.com/101495
Reviewed-by: Andrew Bonventre <andybons@golang.org>
There are a few places where the integer value is used.
Use the equivalent constants to aid with readability.
Change-Id: I023b1dbe605340544c056d0e0d9d6d5a7d7d0edc
GitHub-Last-Rev: c1c90bcd25
GitHub-Pull-Request: golang/go#24123
Reviewed-on: https://go-review.googlesource.com/96984
Reviewed-by: Andrew Bonventre <andybons@golang.org>
The fourth example for map indexing states you have a map of type [K]V
and attempts to read in a variable of type T. Further, the example
is meant to showcase the boolean return variable saying whether the
map contained a key, but overrides to type T. This will not compile.
Changed last updated date to February 18
Fixes: #23895
Change-Id: I63c52adbcd989afd4855e329e6c727f4c01f7881
Reviewed-on: https://go-review.googlesource.com/94906
Reviewed-by: Robert Griesemer <gri@golang.org>
This moves the paragraph mentioning the use of _ higher up
to emphasize the warning and thereby reducing chances of getting
stuck.
Fixes#22617
Change-Id: I64352a3e966a22d86fc9d381332bade49d74714a
Reviewed-on: https://go-review.googlesource.com/87375
Reviewed-by: Ian Lance Taylor <iant@golang.org>
The new break and continue actions do not work in html/template, and
fixing them requires thinking about security issues that seem too
tricky at this stage of the release. We will try again for 1.11.
Original CL description:
text/template: add break, continue actions in ranges
Adds the two range control actions "break" and "continue". They act the
same as the Go keywords break and continue, but are simplified in that
only the innermost range statement can be broken out of or continued.
Fixes#20531
Updates #20531
Updates #23683
Change-Id: Ia7fd3c409163e3bcb5dc42947ae90b15bdf89853
Reviewed-on: https://go-review.googlesource.com/92155
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
The speed of feature development for these products outpaces the
standard Go 6-month release cycle tied to this page. The cost of
maintaining this list is becoming a burden as we make every
attempt at being impartial. As of this writing, we believe feature
lists belong on the pages of the editors/IDEs themselves.
Change-Id: Ie2dfe0e0d47d203c913373e58cbb65cb0fb14d0c
Reviewed-on: https://go-review.googlesource.com/91976
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
The EBNF production
Function = Signature FunctionBody .
was used in FunctionDecl, MethodDecl, and FunctionLit, but only
for the latter it shortened the syntax slightly.
This change "inlines" Function which simplifies FunctionDecl and
MethodDecl and gets rid of the Function production.
This has no impact on the specified language. Also, the Function
production is never referred to by the prose, so it's safe to
remove it from the spec.
Finally, neither go/ast nor go/parser have a representation of
this production via a corresponding node or parse function, so
no possibly valuable documentation is lost, either.
Change-Id: Ia2875d31c6ec2d2079081ef481e50bad4f43c694
Reviewed-on: https://go-review.googlesource.com/91515
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
Previously we allowed drivers to modify the row buffer used to scan
values when closing Rows. This is no longer acceptable and can lead
to data races.
Fixes#23519
Change-Id: I91820a6266ffe52f95f40bb47307d375727715af
Reviewed-on: https://go-review.googlesource.com/89936
Run-TryBot: Daniel Theophanes <kardianos@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
When we introduced the notion of alias type declarations, we renamed
"named type" to "defined type" to avoid confusion with types denoted
by aliases and thus are also types with names, or "named types".
Some of the old uses of "named types" remained; this change removes
them.
Now the spec consistently uses the terms:
- "defined type" for a type declared via a type definition
- "type name" for any name denoting an (alias or defined) type
- "alias" for a type name declared in an alias declaration
New prose is encouraged to avoid the term "named type" to counter-
act further confusion.
Fixes#23474.
Change-Id: I5fb59f1208baf958da79cf51ed3eb1411cd18e03
Reviewed-on: https://go-review.googlesource.com/89115
Reviewed-by: Rob Pike <r@golang.org>
Except for removing the DRAFT marker, I think these are now ready to go.
Change-Id: I20604f5b135616189a24990db463c7bb5e7d48f1
Reviewed-on: https://go-review.googlesource.com/88975
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Fixes#23443.
Change-Id: If60c39b582ee5308e9fa902f93c1b6ae7890346c
Reviewed-on: https://go-review.googlesource.com/87975
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
Every few months we get a new error report claiming that there
is a typo in the spec related to this specific example. Clearly,
the fact that two types with the same identifier are identical
seems exceedingly obvious to readers; thus the example seems not
worth the trouble. Removing it.
For #9226.
For #22202.
For #22495.
For #23096.
For #23409.
There may be more.
Change-Id: I003ba79dc460ffb028a4ecb5f29efd60f2551912
Reviewed-on: https://go-review.googlesource.com/87417
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Type values being comparable implies that Type is a valid map key type.
As previously written, they sound unrelated.
Change-Id: I8e2235275d62898bfb47de850e8257b51ab5cbd6
Reviewed-on: https://go-review.googlesource.com/87021
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Don't suggest that it's always necessary to disable optimizations.
(The text can be misread that way, even if it's not what was meant.)
Change-Id: I9a2dff6a75ce4a3f9210cdf4f5bad6aaaeae9b29
Reviewed-on: https://go-review.googlesource.com/87018
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
We were not being consistent.
Standardize on toolchain.
Change-Id: Id0e756b5214ce4a1341f733634ed95263f03a61c
Reviewed-on: https://go-review.googlesource.com/87017
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
No longer needs to be done.
Updates #23009
Updates #21255
Change-Id: I78e9e29a923dc03dea89ff3a5bf60f2e0bd0c0aa
Reviewed-on: https://go-review.googlesource.com/86476
Reviewed-by: Ian Lance Taylor <iant@golang.org>
The spec refers to a map's key and element types; thus the respective
values are "keys" and "elements". Also, a map value is the value of
the entire map.
Similar fix for channels, where appropriate.
Fixes#23254.
Change-Id: I6f03ea6d86586c7b0b3e84f0c2e9446b8109fa53
Reviewed-on: https://go-review.googlesource.com/85999
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Russ Cox <rsc@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
After 1.10, gcflags apply to only the immediate target.
Change-Id: I3bf331c76041e7b533076cb2f3274e44aafff58a
Reviewed-on: https://go-review.googlesource.com/84775
Reviewed-by: Heschi Kreinick <heschi@google.com>
After go1.10, compiler/linker option flags apply only to the packages
listed directly on the command line unless the matching pattern is
specified. For debugging, we want to apply the flags to all packages.
Change-Id: Ic69eee1491b1080fc140592f200c59a6e03d87ac
Reviewed-on: https://go-review.googlesource.com/84135
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Use Brendan Gregg's FlameGraphs page link.
Mention the flame graph is available from the upstream pprof.
Change-Id: Ife1d5a5f4f93f20cd5952a09083f798b77d25a60
Reviewed-on: https://go-review.googlesource.com/83798
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
By the time Go 1.11 is released, OS X 10.9 Mavericks will have gone
two years with no security updates.
For #23011.
Change-Id: I6482852a14477985769b72c45c92416aae8be100
Reviewed-on: https://go-review.googlesource.com/83795
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Use “substantial”, which is believed to be the correct word.
Additionally, this change strips trailing whitespace from the file.
Change-Id: I5b6b718fc09e4b8b911b95e8be0733abd58e165d
Reviewed-on: https://go-review.googlesource.com/83356
Reviewed-by: Andrew Gerrand <adg@golang.org>
It's 32-bit binaries that fail for reasons unknown on 64-bit kernels.
Change-Id: Ib410af0491160e3ed8d32118966142516123db2c
Reviewed-on: https://go-review.googlesource.com/82655
Reviewed-by: Andrew Bonventre <andybons@golang.org>
GOMIPS is a GOARCH=mips{,le} specific option, for a choice between
hard-float and soft-float. Valid values are 'hardfloat' (default) and
'softfloat'. It is passed to the assembler as
'GOMIPS_{hardfloat,softfloat}'.
Note: GOMIPS will later also be used for a choice of MIPS instruction
set (mips32/mips32r2).
Updates #18162
Change-Id: I35417db8625695f09d6ccc3042431dd2eaa756a6
Reviewed-on: https://go-review.googlesource.com/37954
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
The note about the single change workflow is included in the
git-codereview installation instructions, but it has nothing to do with
installing git-codereview. This note is more relevant for when a change
is actually being made.
Change-Id: Iccb90f3b7da87fab863fa4808438cd69a21a2fce
Reviewed-on: https://go-review.googlesource.com/76317
Reviewed-by: Steve Francia <spf@golang.org>
There were too many changes of direction. Tidy up the intro a little
for better flow, and delete some unnecessary comments.
Change-Id: Ib5d85c0992626bd3152f86a51585884d3e0cab72
Reviewed-on: https://go-review.googlesource.com/80495
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This change drops the support for FreeBSD 9 or below and simplifies
platform-dependent code for the sake of maintenance.
Updates #7187.
Fixes#11412.
Updates #16064.
Updates #18854.
Fixes#19072.
Change-Id: I9129130aafbfc7d0d7e9b674b6fc6cb31b7381be
Reviewed-on: https://go-review.googlesource.com/64910
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Only a last sentence of A Tour of Go is shifting to the left.
I fixed a HTML tag order according to other sentences it.
Change-Id: I6a301178d15db893f596b8da80a4d98721160386
Reviewed-on: https://go-review.googlesource.com/79856
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This updates the name of the IDE and the capability it has.
Fixes#22784
Change-Id: Ief261324c86bc77a03071629f496f4d4d9df1b44
Reviewed-on: https://go-review.googlesource.com/79255
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
The section about custom pprof paths referenced the wrong path.
This also fixes a couple minor grammatical issues elsewhere in the doc.
Fixes#22832
Change-Id: I890cceb53a13c1958d9cf958c658ccfcbb6863d5
Reviewed-on: https://go-review.googlesource.com/79035
Reviewed-by: Alberto Donizetti <alb.donizetti@gmail.com>
Apparently we maintain this list by hand (for example, CL 52351).
Change-Id: I0a0b346cf2b7b547729cb1d0fa1642de447f7bba
Reviewed-on: https://go-review.googlesource.com/78117
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
GDB 7.5 recognizes DWARF4 by default.
GDB 7.5 release note does not explicitly mention DWARF4 support
but according to GCC 4.8 release note
https://gcc.gnu.org/gcc-4.8/changes.html
"DWARF4 is now the default when generating DWARF debug
information. ...
GDB 7.5, Valgrind 3.8.0 and elfutils 0.154 debug information
consumers support DWARF4 by default."
Change-Id: I56b011c7c38fbc103bbd366ceaea3b709c66ab7f
Reviewed-on: https://go-review.googlesource.com/77570
Reviewed-by: Alberto Donizetti <alb.donizetti@gmail.com>
If people are interested in contributing to Go, but not sure what
change they'd like to make just yet, we can point them to the scratch
repo, so they can go through the process of submitting and merging
something now, and make more useful contributions later.
My evidence that sending people to the scratch repo would encourage
future contributions is that a number of people who went through the
workshop at Gophercon have continued to send CL's after submitting to
the scratch repo, even though I doubt they planned to before going
through the workshop.
Change-Id: Ieb48415773c0ee7dc400f8bf6f57f752eca8eeb5
Reviewed-on: https://go-review.googlesource.com/49970
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
A method expression is of the form T.m where T is a type and m
is a method of that type. The spec restricted T essentially to
a type name. Both cmd/compile and go/types accepted any type
syntactically, and a method expression was really just a form
of a selector expression x.f where x denotes a type.
This CL removes the spec syntax restriction from MethodExpr
to match the actual implementation. It also moves MethodExpr
from Operand to PrimaryExpr, because that's what it is.
It still keeps the separate notion of MethodExpr even though
it looks just like a selector expresion, since a MethodExpr
must start with a type rather than a value, and the spec's
syntax expresses this bit of semantics via distinct productions
(e.g., conversions look like calls but also must start with
a type).
Fixes#9060.
Change-Id: Idd84655b5b4f85d7ee53ebf749f73f0414a05f4a
Reviewed-on: https://go-review.googlesource.com/73233
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Russ Cox <rsc@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
https://golang.org/cl/71750 specifies iota values as indices,
thus making them independent from nested constant declarations.
This CL removes some of the comments in the examples that were
still referring to the old notion of iotas being incremented
and reset.
As an aside, please note that the spec still permits the use
of iota in a nested function (like before). Specifically, the
following cases are permitted by the spec (as before):
1) const _ = len([iota]int{})
2) const _ = unsafe.Sizeof(func(){ _ = iota })
For #15550.
Change-Id: I9e5fec75daf7b628b1e08d970512397e9c348923
Reviewed-on: https://go-review.googlesource.com/71912
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Issue #15550 is clearly an esoteric case but the spec was silent
about it and we had diverging implementations. By making `iota`
and index that is relative to the respective constant declaration,
nested const declarations won't affect outer values of `iota`.
cmd/compile and go/types already follow this semantics.
Fixes#15550.
Change-Id: If138189e3ea4373f8ba50ac6fb1d219b481f8698
Reviewed-on: https://go-review.googlesource.com/71750
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Fixes#22258.
Change-Id: I43e68f1cf3163e1a041ebff2734ff2cb7943f695
Reviewed-on: https://go-review.googlesource.com/71431
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Nowhere in the spec did we mention the import path for package
unsafe. Now we do.
Fixes#22308.
Change-Id: Ifd42c873188e898c597cdee4284e7a9d234a9282
Reviewed-on: https://go-review.googlesource.com/71373
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Fixes#21054
Change-Id: I016486dc62c04a80727f8da7d1dcec52f2c7f344
Reviewed-on: https://go-review.googlesource.com/62291
Reviewed-by: Giovanni Bajo <rasky@develer.com>
Reviewed-by: Chris Broadfoot <cbro@golang.org>
Update golang/go#22120
Change-Id: Ie7dbd0e7b01b116c960243a8cd3fa9fd121f317d
Reviewed-on: https://go-review.googlesource.com/68021
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Dave Cheney <dave@cheney.net>
Updated page to Page to match with the sample code
Fixes#21773
Change-Id: Ia884a22fd587860c7a6148103b2b474425e45284
Reviewed-on: https://go-review.googlesource.com/66790
Reviewed-by: Ian Lance Taylor <iant@golang.org>
When we introduced the distinction between "defined" and "alias" types
we retained the notion of a "named" type (any type with a name). The
predeclared types (which all have names) simply remained named types.
This CL clarifies the spec by stating excplicitly which predeclared
types are defined types (or at least "act" like defined types), and
which ones are alias types.
Fixes#21785.
Change-Id: Ia8ae133509eb5d738e6757b3442c9992355e3535
Reviewed-on: https://go-review.googlesource.com/64591
Reviewed-by: Russ Cox <rsc@golang.org>
Unify colons (outside of <strong></strong>) and add a missing space in
the list of groups of diagnostics solutions.
Change-Id: Icbcd94427d4905dd88c4ea82aaa5dbf064c00990
Reviewed-on: https://go-review.googlesource.com/63111
Reviewed-by: JBD <jbd@google.com>
Diagnostics guide lists various dimensions of
diagnostics tools and libraries available in Go.
As a follow-up, I will add an entry section where
we navigate user to the right tool depending on
the type of problem they are willing to improve
or understand better.
Change-Id: I4e94b4b834014f51c988103457da84200c7827d9
Reviewed-on: https://go-review.googlesource.com/61693
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
The spec is not conclusive about whether a non-constant shift of
certain untyped constant left operands is valid when the shift
expression appears as an index in an index or slice expression,
or as a size in a `make` function call.
Despite identical spec rules in all these cases, cmd/compile accepts
make([]byte, 1.0 << s)
but pronounces an error for
a[1.0 << s]
(go/types accepts both).
This change clarifies the spec by explicitly stating that an
untyped constant left operand in a non-constant shift (1.0 in
the above examples) will be given type `int` in these contexts.
A separate issue #21693 addresses the cmd/compile bug.
Fixes#14844.
Change-Id: I4b52125e487a607fae377fcbed55463cdce9836c
Reviewed-on: https://go-review.googlesource.com/60230
Reviewed-by: Russ Cox <rsc@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Currently, cgo supports only macros which can be reduced to constants
or variables. The CL addresses remaining parts, macros which can be
represented as niladic functions.
The basic idea is simple:
1. make a thin wrapper function per macros.
2. replace macro expansions with function calls.
Fixes#10715Fixes#18720
Change-Id: I150b4fb48e9dc4cc34466ef6417c04ac93d4bc1a
Reviewed-on: https://go-review.googlesource.com/43970
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
The last sentence in the section on slice expressions could be read
as if it might apply to strings. Changed the sentence a bit to
emphasize its applicability to slices only. See also the issue for
more background.
Fixes#19220.
Change-Id: I8551f34230e4ed93f951e7b871cc81f54a5874a9
Reviewed-on: https://go-review.googlesource.com/59890
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Throughout the spec we use the notion of a constant x being
representable by a value of type T. While intuitively clear,
at least for floating-point and complex constants types, the
concept was not well-defined. In the section on Conversions
there was an extra rule for floating-point types only and it
missed the case of floating-point values overflowing to an
infinity after rounding.
Since the concept is important to Go, and a compiler most
certainly will have a function to test "representability",
it seems warranted to define the term explicitly in the spec.
This change introduces a new entry "Representability" under
the section on "Properties of types and values", and defines
the term explicitly, together with examples.
The phrase used is "representable by" rather than "representable as"
because the former use is prevalent in the spec.
Additionally, it clarifies that a floating-point constant
that overflows to an infinity after rounding is never
representable by a value of a floating-point type, even though
infinities are valid values of IEEE floating point types.
This is required because there are not infinite value constants
in the language (like there is also no -0.0) and representability
also matters for constant conversions. This is not a language
change, and type-checkers have been following this rule before.
The change also introduces links throughout the spec to the new
section as appropriate and removes duplicate text and examples
elsewhere (Constants and Conversions sections), leading to
simplifications in the relevant paragraphs.
Fixes#15389.
Change-Id: I8be0e071552df0f18998ef4c5ef521f64ffe8c44
Reviewed-on: https://go-review.googlesource.com/57530
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
The enumeration of numeric types missed the complex types.
Clarify by removing the explicit enumeration and referring
to numeric types instead.
Fixes#21579.
Change-Id: If36c2421f8501eeec82a07f442ac2e16a35927ba
Reviewed-on: https://go-review.googlesource.com/58491
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
The old wording seemed to imply that nil is a kind of type.
Slightly reworded for clarity.
Fixes#21580.
Change-Id: I29898bf0125a10cb8dbb5c7e63ec5399ebc590ca
Reviewed-on: https://go-review.googlesource.com/58490
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Rob Pike <r@golang.org>
Pre-emptive. Go 1.9 is expected to be released in August.
Change-Id: I0f58c012c4110bf490022dc2c1d69c0988d73bfa
Reviewed-on: https://go-review.googlesource.com/52351
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
The old comment for the example
type PtrMutex *Mutex
talked about the method set of the base type of PtrMutex.
It's more direct and clearer to talk about the underlying
type of PtrMutex for this specific example.
Also removed link inside pre-formatted region of text.
Fixes#20900.
Change-Id: Ie37340e53670e34ebe13e780ba8ccb1bba67795c
Reviewed-on: https://go-review.googlesource.com/55070
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Some editors can filter the autocompletion suggestions based on
whether the code will compile once autocompleted. Explain this
feature with better wording.
Change-Id: I29e4b0396878f18c79208915402c0a209a813b04
Reviewed-on: https://go-review.googlesource.com/53355
Reviewed-by: Florin Patan <florinpatan@gmail.com>
Reviewed-by: Andrew Bonventre <andybons@golang.org>
