klyn.regex.RegEx.replaceFirst
method

    public native replaceFirst(input as String, replacement as String) as String:

Description

Replaces the first occurrence of the pattern with a replacement string.

Parameters

- input The string where the replacement will be performed.
- replacement The replacement string.

Returns

The string after the replacement. ```regex = RegEx(r"\d+") result = regex.replaceFirst("123 abc 456", "#") # result will be "# abc 456"` ``