mirror of
https://github.com/golang/go
synced 2024-11-21 05:24:40 -07:00
weekly.2011-07-19
R=golang-dev, nigeltao, dsymonds, r CC=golang-dev https://golang.org/cl/4801042
This commit is contained in:
Andrew Gerrand
parent
48d1240e51
commit
50ddb98b24
1
.hgtags
1
.hgtags
@ -70,6 +70,5 @@ dac76f0b1a18a5de5b54a1dc0b231aceaf1c8583 weekly.2011-06-16
|
||||
541c445d6c1353fbfa39df7dc4b0eb27558d1fc1 weekly.2011-06-23
|
||||
1b38d90eebcddefabb3901c5bb63c7e2b04a6ec5 release.r58
|
||||
16bfa562ba767aefd82e598da8b15ee4729e23b0 weekly.2011-07-07
|
||||
16bfa562ba767aefd82e598da8b15ee4729e23b0 weekly
|
||||
d292bc7886682d35bb391bf572be28656baee12d release.r58.1
|
||||
d292bc7886682d35bb391bf572be28656baee12d release
|
||||
|
||||
@ -14,6 +14,123 @@ hg pull
|
||||
hg update weekly.<i>YYYY-MM-DD</i>
|
||||
</pre>
|
||||
|
||||
<h2 id="2011-07-19">2011-07-19</h2>
|
||||
|
||||
<pre>
|
||||
This weekly snapshot includes a language change and a change to the image
|
||||
package that may require changes to client code.
|
||||
|
||||
The language change is that an "else" block is now required to have braces
|
||||
except if the body of the "else" is another "if". Since gofmt always puts those
|
||||
braces in anyway, programs will not be affected unless they contain "else for",
|
||||
"else switch", or "else select". Run gofmt to fix any such programs.
|
||||
|
||||
The image package has had significant changes made to the Pix field of struct
|
||||
types such as image.RGBA and image.NRGBA. The image.Image interface type has
|
||||
not changed, though, and you should not need to change your code if you don't
|
||||
explicitly refer to Pix fields. For example, if you decode a number of images
|
||||
using the image/jpeg package, compose them using image/draw, and then encode
|
||||
the result using image/png, then your code should still work as before.
|
||||
|
||||
If you do explicitly refer to Pix fields, there are two changes. First, Pix[0]
|
||||
now refers to the pixel at Bounds().Min instead of the pixel at (0, 0). Second,
|
||||
the element type of the Pix slice is now uint8 instead of image.FooColor. For
|
||||
example, for an image.RGBA, the channel values will be packed R, G, B, A, R, G,
|
||||
B, A, etc. For 16-bits-per-channel color types, the pixel data will be stored
|
||||
as big-endian uint8s.
|
||||
|
||||
Most Pix field types have changed, and so if your code still compiles after
|
||||
this change, then you probably don't need to make any further changes (unless
|
||||
you use an image.Paletted's Pix field). If you do get compiler errors, code
|
||||
that used to look like this:
|
||||
|
||||
// Get the R, G, B, A values for the pixel at (x, y).
|
||||
var m *image.RGBA = loadAnImage()
|
||||
c := m.Pix[y*m.Stride + x]
|
||||
r, g, b, a := c.R, c.G, c.B, c.A
|
||||
|
||||
should now look like this:
|
||||
|
||||
// Get the R, G, B, A values for the pixel at (x, y).
|
||||
var m *image.RGBA = loadAnImage()
|
||||
i := (y-m.Rect.Min.Y)*m.Stride + (x-m.Rect.Min.X)*4
|
||||
r := m.Pix[i+0]
|
||||
g := m.Pix[i+1]
|
||||
b := m.Pix[i+2]
|
||||
a := m.Pix[i+3]
|
||||
|
||||
This image package change will not be fixed by gofix: how best to translate
|
||||
code into something efficient and idiomatic depends on the surrounding context,
|
||||
and is not easily automatable. Examples of what to do can be found in the
|
||||
changes to image/draw/draw.go in http://codereview.appspot.com/4675076/
|
||||
|
||||
Other changes:
|
||||
* 6l: change default output name to 6.out.exe on windows (thanks Alex Brainman).
|
||||
* archive/zip: add Writer,
|
||||
add Mtime_ns function to get modified time in sensible format.
|
||||
* cc, ld, gc: fixes for Plan 9 build (thanks Lucio De Re).
|
||||
* cgi: close stdout reader pipe when finished.
|
||||
* cgo: add missing semicolon in generated struct,
|
||||
windows amd64 port (thanks Wei Guangjing).
|
||||
* codereview: fix for Mercurial 1.9.
|
||||
* dashboard: list "most installed this week" with rolling count.
|
||||
* debug/elf: read ELF Program headers (thanks Matthew Horsnell).
|
||||
* debug/pe: fixes ImportedSymbols for Win64 (thanks Wei Guangjing).
|
||||
* debug/proc: remove unused package.
|
||||
* doc/talks/io2010: update with gofix and handle the errors.
|
||||
* exp/eval, exp/ogle: remove packages eval and ogle.
|
||||
* exp/regexp/syntax: add Prog.NumCap.
|
||||
* exp/template: API changes, bug fixes, and tweaks.
|
||||
* flag: make -help nicer.
|
||||
* fmt: Scan(&int) was mishandling a lone digit.
|
||||
* gc: fix closure bug,
|
||||
fix to build with clang (thanks Dave Cheney),
|
||||
make size of struct{} and [0]byte 0 bytes (thanks Robert Hencke),
|
||||
some enhancements to printing debug info.
|
||||
* gif: fix local color map and coordinates.
|
||||
* go/build: fixes for windows (thanks Alex Brainman),
|
||||
include processing of .c files for cgo packages (thanks Alex Brainman),
|
||||
less aggressive failure when GOROOT not found.
|
||||
* go/printer: changed max. number of newlines from 3 to 2.
|
||||
* gob: register more slice types (thanks Bobby Powers).
|
||||
* godoc: support for file systems stored in .zip files.
|
||||
* goinstall, dashboard: Google Code now supports git (thanks Tarmigan Casebolt).
|
||||
* hash/crc32: add SSE4.2 support.
|
||||
* html: update section references in comments to the latest HTML5 spec.
|
||||
* http: drain the pipe output in TestHandlerPanic to avoid logging deadlock,
|
||||
fix Content-Type of file extension (thanks Yasuhiro Matsumoto),
|
||||
implement http.FileSystem for zip files,
|
||||
let FileServer work when path doesn't begin with a slash,
|
||||
support for periodic flushing in ReverseProxy.
|
||||
* image/draw: add benchmarks.
|
||||
* json: add omitempty struct tag option,
|
||||
allow using '$' and '-' as the struct field's tag (thanks Mikio Hara),
|
||||
encode \r and \n in strings as e.g. "\n", not "\u000A" (thanks Evan Martin),
|
||||
escape < and > in any JSON string for XSS prevention.
|
||||
* ld: allow seek within write buffer<
|
||||
add a PT_LOAD PHDR entry for the PHDR (thanks David Anderson).
|
||||
* net: windows/amd64 port (thanks Wei Guangjing).
|
||||
* os: plan9: add Process.Signal as a way to send notes (thanks Yuval Pavel Zholkover).
|
||||
* os: don't permit Process.Signal after a successful Wait.
|
||||
* path/filepath: fixes for windows paths (thanks Alex Brainman).
|
||||
* reflect: add Value.NumMethod,
|
||||
panic if Method index is out of range for a type.
|
||||
* runtime: faster entersyscall, exitsyscall,
|
||||
fix panic for make(chan [0]byte),
|
||||
fix subtle select bug (thanks Hector Chu),
|
||||
make goc2c build on Plan 9 (thanks Lucio De Re),
|
||||
make TestSideEffectOrder work twice,
|
||||
several parallelism-related optimizations and fixes,
|
||||
stdcall_raw stack 16byte align for Win64 (thanks Wei Guangjing),
|
||||
string-related optimizations (thanks Quan Yong Zhai),
|
||||
track running goroutine count.
|
||||
* strconv: handle [-+]Infinity in atof.
|
||||
* sync: add fast paths to WaitGroup,
|
||||
improve RWMutex performance.
|
||||
* syscall: add Flock on Linux,
|
||||
parse and encode SCM_RIGHTS and SCM_CREDENTIALS (thanks Albert Strasheim).
|
||||
</pre>
|
||||
|
||||
<h2 id="2011-07-07">2011-07-07</h2>
|
||||
|
||||
<pre>
|
||||
|
||||
Loading…
Reference in New Issue
Block a user