replaceFirst method

  1. @useResult
List<T> replaceFirst(
  1. T value,
  2. T replacement
)

New list with first occurrence of value replaced by replacement.

Implementation

@useResult
List<T> replaceFirst(T value, T replacement) {
  final List<T> out = List<T>.of(this);
  final int i = indexOf(value);
  if (i >= 0) out[i] = replacement;
  return out;
}