umisama/go-regexpcache

what's this?

This is a cacheable regexp package. If expression is used two times or more, this returns cached regexp.Regexp object in very less time. go-regexpcache has compatible interface with official regexp package.

Here is simple usage:

import "github.com/umisama/go-regexpcache"

// First time, returns regexp is parsed.
match := regexpcache.MustCompile("^[hc]at").MatchString("cat")
println(match)

// After that, returns regexp from cache in less time.
match = regexpcache.MustCompile("^[hc]at").MatchString("cat")
println(match)

You don't have to pollute global variables with go-regexpcache.

before:

var re = regexp.MustCompile("^[hc]at")

func varidation(str string) bool {
	// regexp.Regexp object is global for avoid compile time
	return re.MatchString(str)
}

after:

func varidation(str string) bool {
	// You can write regexp inside function
	return regexpcache.MustCompile("^[hc]at").MatchString(str)
}

intallation

go get github.com/umisama/go-regexpcache

document

• godoc.org

license

under the MIT License