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README.md
go-version 
Version normalizer and comparison library for go, heavy based on PHP version_compare function and Version comparsion libs from Composer PHP project
Installation
The recommended way to install go-version
go get github.com/mcuadros/go-version
Examples
How import the package
import (
"github.com/mcuadros/go-version"
)
version.Normalize(): Normalizes a version string to be able to perform comparisons on it
version.Normalize("10.4.13-b")
//Returns: 10.4.13.0-beta
version.CompareSimple(): Compares two normalizated version number strings
version.CompareSimple("1.2", "1.0.1")
//Returns: 1
version.CompareSimple("1.0rc1", "1.0")
//Returns: -1
version.Compare(): Compares two normalizated version number strings, for a particular relationship
version.Compare("1.0-dev", "1.0", "<")
//Returns: true
version.Compare("1.0rc1", "1.0", ">=")
//Returns: false
version.Compare("2.3.4", "v3.1.2", "<")
//Returns: true
version.ConstrainGroup.Match(): Match a given version againts a group of constrains, read about constraint string format at Composer documentation
c := version.NewConstrainGroupFromString(">2.0,<=3.0")
c.Match("2.5.0beta")
//Returns: true
c := version.NewConstrainGroupFromString("~1.2.3")
c.Match("1.2.3.5")
//Returns: true
version.Sort(): Sorts a string slice of version number strings using version.CompareSimple()
version.Sort([]string{"1.10-dev", "1.0rc1", "1.0", "1.0-dev"})
//Returns []string{"1.0-dev", "1.0rc1", "1.0", "1.10-dev"}
License
MIT, see LICENSE