release.2010-10-13

[Andrew Gerrand]

We've just tagged a new Go release, release.2010-10-13. As usual, you
can update by running:
hg pull
hg update release

This release includes changes to the log package, the removal of exp/iterable,
two new tools (gotry and goplay), one small language change, and many other
changes and fixes. If you use the log or iterable packages, you need to make
changes to your code.

The log package has changed. Loggers now have only one output, and output to
standard error by default. The names have also changed, although the old names
are still supported. They will be deleted in the next release, though, so it
would be good to update now if you can. For most purposes all you need to do
is make these substitutions:
log.Stderr -> log.Println or log.Print
log.Stderrf -> log.Printf
log.Crash -> log.Panicln or log.Panic
log.Crashf -> log.Panicf
log.Exit -> log.Exitln or log.Exit
log.Exitf -> log.Exitf (no change)
Calls to log.New() must drop the second argument.
Also, custom loggers with exit or panic properties will need to be reworked.
For full details, see the change description:
http://code.google.com/p/go/source/detail?r=d8a3c7563d

The language change is that uses of pointers to interface values no longer
automatically dereference the pointer. A pointer to an interface value is more
often a beginner’s bug than correct code.

The package exp/iterable has been removed. It was an interesting experiment,
but it encourages writing inefficient code and has outlived its utility.

The new tools:
* gotry: an exercise in reflection and an unusual tool. Run 'gotry' for details.
* goplay: a stand-alone version of the Go Playground. See misc/goplay.

Other changes:
* 6l: Mach-O fixes, and fix to work with OS X nm/otool (thanks Jim McGrath).
* [568]a: correct line numbers for statements.
* arm: code generation and runtime fixes
* big: fix panic and round correctly in Rat.FloatString (thanks Anthony Martin).
* build: Make.cmd: remove $(OFILES) (thanks Eric Clark),
Make.pkg: remove .so before installing new one,
add GOHOSTOS and GOHOSTARCH environment variables.
* crypto/tls: better error messages for certificate issues,
make SetReadTimeout work.
* doc: add Sydney University video to docs page.
* exp/draw/x11: support X11 vendors other than "The X.Org Foundation".
* expvar: add (*Int).Set (thanks Sam Thorogood).
* fmt: add Errorf helper function,
allow %d on []byte.
* gc: O(1) string comparison when lengths differ,
various bug fixes.
* http: return the correct error if a header line is too long.
* image: add image.Tiled type, the Go equivalent of Plan 9's repl bit.
* ld: be less picky about bad line number info.
* misc/cgo/life: fix for new slice rules (thanks Graham Miller).
* net: allow _ in DNS names.
* netchan: export before import when testing, and
zero out request to ensure correct gob decoding. (thanks Roger Peppe).
* os: make tests work on windows (thanks Alex Brainman).
* runtime: bug fix: serialize mcache allocation,
correct iteration of large map values,
faster strequal, memequal (thanks Graham Miller),
fix argument dump in traceback,
fix tiny build.
* smtp: new package (thanks Evan Shaw).
* syscall: add sockaddr_ll support for linux/386, linux/amd64 (thanks
Mikio Hara),
add ucred structure for SCM_CREDENTIALS over UNIX sockets.
(thanks Albert Strasheim).
* syscall: implement WaitStatus and Wait4() for windows (thanks Wei Guangjing).
* time: add After.
* websocket: enable tests on windows (thanks Alex Brainman).

Apologies if we missed anyone in the above list. We appreciate all your help.

To see a full list of changes between this and the previous release,
after updating, run:
hg log -r release.2010-09-29:release.2010-10-13

Enjoy.

Andrew

[fango]

> The log package has changed.  

Effective Go Chinese translation has been updated, together with an
(incomplete yet) Go spec.

http://code.google.com/p/ac-me/downloads/list

Cheers,
Fango

[Andrew Gerrand]

On 14 October 2010 16:39, Andrew Gerrand <a...@google.com> wrote:
> The log package has changed.  Loggers now have only one output, and output to
> standard error by default.

> Calls to log.New() must drop the second argument.

The release tagged release.2010-10-13 contained a bug where a Writer
argument supplied to log.New would be ignored, and the default output
would be used instead.

This has been fixed, and a new release has been issued and tagged as
release.2010-10-13.1. If you use the log package, you should update by

running:
hg pull
hg update release

Sorry for the inconvenience,
Andrew