matchAsPrefix method Null safety

Match? matchAsPrefix(
  1. String string,
  2. [int start = 0]
)

Matches this pattern against the start of string.

Returns a match if the pattern matches a substring of string starting at start, and null if the pattern doesn't match at that point.

The start must be non-negative and no greater than string.length.

final string = 'Dash is a bird';

var regExp = RegExp(r'bird');
var match = regExp.matchAsPrefix(string, 10); // Match found.

regExp = RegExp(r'bird');
match = regExp.matchAsPrefix(string); // null

Implementation

Match? matchAsPrefix(String string, [int start = 0]);