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The Go programming language
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Ludi Rehak 82bf12902f regexp/syntax: test for lowercase letters first in IsWordChar 
Lowercase letters occur more frequently than uppercase letters
in English text.  In IsWordChar, evaluate the most common case
(lowercase letters) first to minimize the expected value of its
execution time. Code clarity does not suffer by rearranging the
order of the checks.

Add a benchmark on a sentence demonstrating the performance
improvement.

name           old time/op  new time/op  delta
IsWordChar-10   122ns ± 0%   114ns ± 1%  -6.68%  (p=0.000 n=8+10)

Change-Id: Ieee8126a4bd8ee8703905b4f75724623029f6fa2
Reviewed-on: https://go-review.googlesource.com/c/go/+/404100
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
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lib/time time/tzdata: generate zip constant during cmd/dist 2023-01-17 22:30:53 +00:00
misc runtime/cgo: add tsan sync for traceback function 2023-03-08 20:11:59 +00:00
src regexp/syntax: test for lowercase letters first in IsWordChar 2023-03-14 04:39:42 +00:00
test cmd/compile: reorder operations in SCCs to enable more inlining 2023-03-09 22:13:26 +00:00
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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

Binary Distributions

Official binary distributions are available at https://go.dev/dl/.

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

Install From Source

If a binary distribution is not available for your combination of operating system and architecture, visit https://go.dev/doc/install/source for source installation instructions.

Contributing

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.