buffering features from go releases

main.go

package main

import (
        "fmt"
)

func main() {
        var str = "apples and bananas; apples and bananas; apples and bananas; apples and bananas;"
        fmt.Println(ReplaceAll(str, "an", "op"))
}

replaceall.go

// +build go1.12

package main

import "strings"

func ReplaceAll(n, old, new string) string {
        return strings.ReplaceAll(n, old, new)
}

replaceall_old.go

// +build !go1.12

package main

import "strings"

func ReplaceAll(n, old, new string) string {
        return strings.Replace(n, old, new, -1)
}