strings.TrimLeftFunc() Function in Golang With Examples
strings.TrimLeftFunc() Function returns a slice of the string s with all leading Unicode code points c satisfying f(c) removed.
Syntax:
func TrimLeftFunc(s string, f func(rune) bool) string
Here, s is the string and func() is the method which satisfies the string characters.
Return Value: It returns the string after removing the leading characters from the string.
Example 1:
// Golang program to illustrate // the strings.TrimLeftFunc() Function package main // importing fmt, unicode and strings import ( "fmt" "strings" "unicode") // Calling Main method func main() { // Here we have a string. The function // returns true for the letters // and all other will trim out // from the string only from Left fmt.Print(strings.TrimLeftFunc("77GeeksForGeeks!!!", func(r rune) bool { return !unicode.IsLetter(r) })) } |
chevron_right
filter_none
Output:
GeeksForGeeks!!!
Example 2:
// Golang program to illustrate // the strings.TrimLeftFunc() Function package main // importing fmt, unicode and strings import ( "fmt" "strings" "unicode") // Calling Main method func main() { // Here we have a string. The function // returns true for the letters // and numbers as well // and all other will trim out // from the string only from left fmt.Print(strings.TrimLeftFunc("!!!34GeeksForGeeks!!!!", func(r rune) bool { return !unicode.IsLetter(r) && !unicode.IsNumber(r) })) } |
chevron_right
filter_none
Output:
34GeeksForGeeks!!!!
