Go1.5 Improvement Summary

This is a creation in Article, where the information may have evolved or changed.

Go1.5 Introduction to Improvement

1. Pure Go (+ few compilations) implement runtime and compiler

2. Improve the garbage collector, support concurrency (one indicator seems to be paused within 10 milliseconds).

3. gomaxprocs Default value to CPU core number

4. Internal restriction rules are extended to third party packages (previously only STD packages enabled)

5. Increase vendor support, basic solution to third-party library dependency issues and version issues

6. Add Trace command, more friendly profiling program running state

7. Add Go Doc command

Grammatical changes

Increase the map literal. Previous code:

M: =map[point]string{  point{29.935523, 52.891566}:   "Persepolis",    point{-25.352594, 131.034361}: "Uluru ",  point{37.422455, -122.084306}:" Googleplex ",}

Now you don't have to write every one. Point the following:

M: =map[point]string{    {29.935523, 52.891566}:   "Persepolis",    { -25.352594, 131.034361}: "Uluru",    {37.422455, -122.084306}: "Googleplex",}

Tool changes

The previous commands, such as 6G/8G, were merged into one: Go tool compile,
The assembler and the connector are also merged into one: Go tool asm, go tool link.
The target file is used uniformly. O is the suffix.

Cross-platform compilation is simpler:

$ exportgoos=darwin goarch=amd64$ Go tool compile program.go$ go tool link PROGRAM.O

in addition, Vet and the cover has stabilized and moved to the core repository.

Go Build increased the -buildmode parameters (Windows is not yet supported),
You can generate a dynamic library and a static library for use with C/+ + (will someone write extensions for languages like Python/ruby with Go?).

CGO section, Windows finally supports external links, that is, the link C + + library can be statically compiled.
At the same time, a ${srcdir} parameter was added to resolve the problem that the current directory change in link caused the . A file not found.

Standard library Section

Http://tip.golang.org/doc/go1.5#library

Thanks to the author: chai2010

View Original: Go1.5 Improvement summary

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