Case insensitive string comparison in Go

Question

How do I compare strings in a case insensitive manner?

For example, "Go" and "go" should be considered equal.

Corticosteroid

Answer 1

https://golang.org/pkg/strings/#EqualFold is the function you are looking for. It is used like this (example from the linked documentation):

package main

import (
    "fmt"
    "strings"
)

func main() {
    fmt.Println(strings.EqualFold("Go", "go"))
}

Corticosteroid

EqualFold not compare :( – Oldie

Sorting can use strings.ToLower("Go") < strings.ToLower("go") – Oldie

> EqualFold not compare @Oldie what do you mean? – Eugene

@KBN, compare operation can say "more, less or equals", EqualFold retrun boolean – Oldie

Answer 2

There is alternative to strings.EqualFold, there is bytes.EqualFold which work in same way

package main

import (
    "bytes"
    "fmt"
)

func main() {
    fmt.Println(bytes.EqualFold([]byte("Go"), []byte("go")))
}

https://golang.org/pkg/bytes/#EqualFold

Endpaper

Please paste code as code, not as images. – Limerick

Note that this makes a copy of each string, which is then immediately discarded. So if you don't already have byte slices, use strings.EqualFold. – Compass