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570f59c109
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Rob Pike 570f59c109 new command gotry. 
An exercise in reflection and an unusual tool.

From the usage message:

usage: gotry [packagedirectory] expression ...
Given one expression, gotry attempts to evaluate that expression.
Given multiple expressions, gotry treats them as a list of arguments
and result values and attempts to find a function in the package
that, given the first few expressions as arguments, evaluates to
the remaining expressions as results.  If the first expression has
methods, it will also search for applicable methods.

If there are multiple expressions, a package directory must be
specified. If there is a package argument, the expressions are
evaluated in an environment that includes
	import . "packagedirectory"

Examples:
	gotry 3+4
		# evaluates to 7
	gotry strings '"abc"' '"c"' 7-5
		# finds strings.Index etc.
	gotry regexp 'MustCompile("^[0-9]+")' '"12345"' true
		# finds Regexp.MatchString

R=rsc, PeterGo, r2
CC=golang-dev
https://golang.org/cl/2352043
2010-10-11 12:40:13 -07:00
doc playground.html: filesystem is not a word. 2010-10-06 23:56:13 +02:00
include cov and prof: implement windows version (just function stubs and build mods) 2010-07-30 11:47:11 +10:00
lib codereview: disallow submit of *.[chys] files indented with spaces 2010-10-06 18:10:23 -04:00
misc life: fix for new slice rules 2010-10-07 04:52:13 -04:00
src new command gotry. 2010-10-11 12:40:13 -07:00
test runtime: correct iteration of large map values 2010-10-06 11:54:41 -04:00
.hgignore add _testmain.go to .hgignore 2010-10-04 14:56:44 +11:00
.hgtags tag release.2010-09-29 2010-09-30 17:48:16 +10:00
AUTHORS A+C: Jim McGrath (individual CLA) 2010-10-11 14:32:25 -04:00
CONTRIBUTORS A+C: Jim McGrath (individual CLA) 2010-10-11 14:32:25 -04:00
favicon.ico add a favicon plus a couple of hi-res versions of gordon 2009-10-26 10:13:07 -07:00
LICENSE Add an explicit patent grant to the Go license. 2010-01-25 15:39:32 -08:00
README build: update, streamline documentation for new $GOBIN 2010-08-24 20:00:50 -04:00

README 

This is the source code repository for the Go programming language.  

For documentation about how to install and use Go,
visit http://golang.org/ or load doc/install.html in your web browser.

After installing Go, you can view a nicely formatted
doc/install.html by running godoc --http=:6060
and then visiting http://localhost:6060/doc/install.html.

Unless otherwise noted, the Go source files are distributed
under the BSD-style license found in the LICENSE file.

--

Binary Distribution Notes

If you have just untarred a binary Go distribution, you need to set
the environment variable $GOROOT to the full path of the go
directory (the one containing this README).  You can omit the
variable if you unpack it into /usr/local/go, or if you rebuild
from sources by running all.bash (see doc/install.html).
You should also add the Go binary directory $GOROOT/bin
to your shell's path.

For example, if you extracted the tar file into $HOME/go, you might
put the following in your .profile:

    export GOROOT=$HOME/go
    export PATH=$PATH:$GOROOT/bin

See doc/install.html for more details.