Go Contains()

The Contains() function returns a boolean value indicating whether a given substring is present or not in a given string. The method returns true if the substring is present, otherwise it returns false.

Syntax

strings.Contains(str, sub_str)

Where str is the original string and sub_str is the substring to check against the original string.

Example

The following example demonstrates the use of the strings.Contains() function.

package main
import (
  "fmt"
  "strings"
)
func main() {
  fmt.Println(strings.Contains("folder","old"))
  fmt.Println(strings.Contains("folder","code"))
}

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The output will be:

true
false

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Codebyte Example

The following example is runnable and uses the strings.Contains() function to determine if the given value is present in the string codecademy.

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