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The Go programming language
12da5a90e0
New logging interface simplifies and generalizes. 1) Loggers now have only one output. 2) log.Stdout, Stderr, Crash and friends are gone. Logging is now always to standard error by default. 3) log.Panic* replaces log.Crash*. 4) Exiting and panicking are not part of the logger's state; instead the functions Exit* and Panic* simply call Exit or panic after printing. 5) There is now one 'standard logger'. Instead of calling Stderr, use Print etc. There are now triples, by analogy with fmt: Print, Println, Printf What was log.Stderr is now best represented by log.Println, since there are now separate Print and Println functions (and methods). 6) New functions SetOutput, SetFlags, and SetPrefix allow global editing of the standard logger's properties. This is new functionality. For instance, one can call log.SetFlags(log.Lshortfile|log.Ltime|log.Lmicroseconds) to get all logging output to show file name, line number, and time stamp. In short, for most purposes 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) This has a slight breakage: since loggers now write only to one output, existing calls to log.New() need to delete the second argument. Also, custom loggers with exit or panic properties will need to be reworked. All package code updated to new interface. The test has been reworked somewhat. The old interface will be removed after the new release. For now, its elements are marked 'deprecated' in their comments. Fixes #1184. R=rsc CC=golang-dev https://golang.org/cl/2419042 |
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| 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.