strings.TrimFunc() Function in Golang is used to returns a slice of the string s with all leading and trailing Unicode code points c satisfying f(c) removed.
Syntax:
func TrimFunc(s string, f func(rune) bool) string
Here, s is the string and function checks the value of rune and returns true if it can be trimmed.
Return Type: It returns the string after removing the specified characters from string.
Example 1:
// Golang program to illustrate // the strings.TrimFunc() 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
fmt.Print(strings.TrimFunc( "77GeeksForGeeks!!!" , func(r rune) bool {
return !unicode.IsLetter(r)
}))
} |
Output:
GeeksForGeeks
Example 2:
// Golang program to illustrate // the strings.TrimFunc() 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
fmt.Print(strings.TrimFunc( "1234GeeksForGeeks!!!!" , func(r rune) bool {
return !unicode.IsLetter(r) && !unicode.IsNumber(r)
}))
} |
Output:
1234GeeksForGeeks
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