description

# replaceFirst abstract method

String replaceFirst(

1. Pattern from,
2. String to, [
3. int startIndex = 0

])

Creates a new string with the first occurrence of `from` replaced by `to`.

Finds the first match of `from` in this string, starting from `startIndex`, and creates a new string where that match is replaced with the `to` string.

Example:

    '0.0001'.replaceFirst(RegExp(r'0'), ''); // '.0001'
    '0.0001'.replaceFirst(RegExp(r'0'), '7', 1); // '0.7001'

## Implementation

    String replaceFirst(Pattern from, String to, [int startIndex = 0]);