How to split Golang strings without deleting separator?

Question

According to the answer at How to split a string and assign it to variables in Golang? splitting a string results in an array of strings where the separator is not present i

Answer 1

The answer above by daplho great and simple. Sometimes I just like to provide an alternative to remove the magic of a function

package main

import "fmt"

var s = "Potato:Salad:Popcorn:Cheese"

func main() {
    a := split(s, ':')
    fmt.Println(a)
}

func split(s string, sep rune) []string {
    var a []string
    var j int
    for i, r := range s {
        if r == sep {
            a = append(a, s[j:i+1])
            j = i + 1
        }
    }
    a = append(a, s[j:])
    return a
}

https://goplay.space/#h9sDd1gjjZw

As a side note, the standard lib version is better than the hasty one above

goos: darwin
goarch: amd64
BenchmarkSplit-4             5000000           339 ns/op
BenchmarkSplitAfter-4       10000000           143 ns/op

So go with that lol