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The Go programming language
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Egon Elbre 9d53d7aa02 slices: optimize Index and Compact for large types 
Using `for i, v := range` loops causes extra copies.
Try to get rid of as much copies as possible.

  goos: windows
  goarch: amd64
  pkg: slices
  cpu: AMD Ryzen Threadripper 2950X 16-Core Processor
                       │   old.txt~    │               new.txt~               │
                       │    sec/op     │    sec/op     vs base                │
  EqualFunc_Large-32       1.077m ± 1%   1.072m ±  1%        ~ (p=0.631 n=10)
  Index_Large-32         346.329µ ± 1%   6.510µ ± 24%  -98.12% (p=0.000 n=10)
  IndexFunc_Large-32       502.9µ ± 0%   381.2µ ±  1%  -24.21% (p=0.000 n=10)
  Compact_Large-32         409.5µ ± 1%   145.2µ ±  9%  -64.54% (p=0.000 n=10)
  CompactFunc_Large-32     693.5µ ± 1%   663.1µ ±  3%   -4.39% (p=0.000 n=10)
  geomean                  556.3µ        191.3µ        -65.61%

Change-Id: I36a2f2172cf30d97a5aa6f8d7cf6981d67daec62
Reviewed-on: https://go-review.googlesource.com/c/go/+/486235
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
2023-04-19 19:09:29 +00:00
.github doc: normalize proposal-process links 2023-03-29 22:00:27 +00:00
api debug/elf: support zstd compression 2023-04-18 20:34:36 +00:00
doc doc: correct spelling on placeholder 2023-04-13 23:15:09 +00:00
lib/time time/tzdata: generate zip constant during cmd/dist 2023-01-17 22:30:53 +00:00
misc make.{bash,bat}: check unmodified $PATH for $GOROOT/bin presence 2023-04-19 14:36:22 +00:00
src slices: optimize Index and Compact for large types 2023-04-19 19:09:29 +00:00
test cmd/compile/internal/types2: only mark variables as used if they are 2023-04-19 14:07:00 +00:00
.gitattributes
.gitignore time/tzdata: generate zip constant during cmd/dist 2023-01-17 22:30:53 +00:00
codereview.cfg codereview.cfg: add codereview.cfg for master branch 2021-02-19 18:44:53 +00:00
CONTRIBUTING.md doc: normalize proposal-process links 2023-03-29 22:00:27 +00:00
go.env cmd/go: introduce GOROOT/go.env and move proxy/sumdb config there 2023-01-17 23:10:39 +00:00
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README.md README: update from CC-BY-3.0 to CC-BY-4.0 2022-11-02 20:14:56 +00:00
SECURITY.md SECURITY.md: replace golang.org with go.dev 2022-04-26 19:59:47 +00:00

README.md

The Go Programming Language

Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.

Gopher image Gopher image by Renee French, licensed under Creative Commons 4.0 Attributions license.

Our canonical Git repository is located at https://go.googlesource.com/go. There is a mirror of the repository at https://github.com/golang/go.

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

Download and Install

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After downloading a binary release, visit https://go.dev/doc/install for installation instructions.

Install From Source

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Go is the work of thousands of contributors. We appreciate your help!

To contribute, please read the contribution guidelines at https://go.dev/doc/contribute.

Note that the Go project uses the issue tracker for bug reports and proposals only. See https://go.dev/wiki/Questions for a list of places to ask questions about the Go language.