replaceFirst method Null safety

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]);