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/Dart 2

add method

void add (E value)
override

Adds value to the end of this list, extending the length by one.

Throws an UnsupportedError if the list is fixed-length.

Implementation

void add(E value) {
  throw new UnsupportedError("Cannot add to immutable List.");
}

© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dart.dev/stable/2.5.0/dart-html/ImmutableListMixin/add.html