go_playground/5-go-by-example/47-string-functions.go

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package main
import (
"fmt"
s "strings"
)
// alias fmt.Println to a shorter name
var p = fmt.Println
// standard librarys strings package provides many useful string-related functions
func main() {
// sample of the functions available in strings
p("Contains: ", s.Contains("test", "es"))
p("Count: ", s.Count("test", "t"))
p("HasPrefix: ", s.HasPrefix("test", "te"))
p("HasSuffix: ", s.HasSuffix("test", "st"))
p("Index: ", s.Index("test", "e"))
p("Join: ", s.Join([]string{"a", "b"}, "-"))
p("Repeat: ", s.Repeat("a", 5))
p("Replace: ", s.Replace("foo", "o", "0", -1))
p("Replace: ", s.Replace("foo", "o", "0", 1))
p("Split: ", s.Split("a-b-c-d-e", "-"))
p("ToLower: ", s.ToLower("TEST"))
p("ToUpper: ", s.ToUpper("test"))
p()
// not part of strings
p("Len: ", len("hello"))
p("Char:", "hello"[1])
}