Compare (Search) in Go

Posted by GoDoc
Public (Editable by Users)

Compare returns an integer comparing two byte slices lexicographically. The result will be 0 if a==b, -1 if a < b, and +1 if a > b. A nil argument is equivalent to an empty slice.

Go
Edit 
package main

import (
	"bytes"
	"sort"
)

func main() {
	// Binary search to find a matching byte slice.
	var needle []byte
	var haystack [][]byte // Assume sorted
	i := sort.Search(len(haystack), func(i int) bool {
		// Return haystack[i] >= needle.
		return bytes.Compare(haystack[i], needle) >= 0
	})
	if i < len(haystack) && bytes.Equal(haystack[i], needle) {
		// Found it!
	}
}