Skip to main content
The standard library’s strings package provides many useful string-related functions. Here are some examples to give you a sense of the package.

​
Common String Operations

These are functions from the package, not methods on the string object itself, so you need to pass the string as the first argument: 
import (
    "fmt"
    s "strings"
)

var p = fmt.Println

​
String Testing

p("Contains:  ", s.Contains("test", "es"))
// Output: Contains:   true

​
String Searching

p("Count:     ", s.Count("test", "t"))
// Output: Count:      2

p("Index:     ", s.Index("test", "e"))
// Output: Index:      1

​
String Manipulation

p("Join:      ", s.Join([]string{"a", "b"}, "-"))
// Output: Join:       a-b

​
Case Conversion

p("ToLower:   ", s.ToLower("TEST"))
// Output: ToLower:    test

p("ToUpper:   ", s.ToUpper("test"))
// Output: ToUpper:    TEST

String Formatting

Learn about string formatting with printf-style verbs

​
Package Reference

Find more functions in the strings package docs.

Build docs developers (and LLMs) love

Get started for freeTalk to us