firstOrDefault method

T? firstOrDefault({
  1. T? defaultValue,
})

Returns the first element in the iterable.

If the iterable is empty, the value specified by defaultValue will be returned instead. If defaultValue is omitted, the returned value will be null.

Example:

void main() {
  final list = <int>[];
  final result = list.firstOrDefault(defaultValue: -1);

  // Result: -1
}

Implementation

T? firstOrDefault({T? defaultValue}) {
  if (isEmpty) return defaultValue;
  return first;
}