Ruby 1.9.3 Digest::SHA1.hexdigest equivalent in Golang

Question

How can I replicate this method from Ruby 1.9.3 to Golang 1.7?

require 'digest/sha2'
text = Digest::SHA1.hexdigest("Hello world")

Answer 1

Use crypto/sha1

package main

import (
    "crypto/sha1"
    "fmt"
)

func main() {
    s := sha1.New()
    s.Write([]byte("Hello world"))
    fmt.Printf("%x", s.Sum(nil))
}

playground