Exception: Concurrent modification during iteration: Instance(length:17) of '_GrowableList'

Question

I make game. In //ERROR ZONE is called Exception. I don\'t understand it. Class game has List recrangles.

void sp         


        

Answer 1

New documentation on latest Dart release 2.1.0 from https://api.dartlang.org/stable/2.1.0/dart-core/Map/removeWhere.html

Implementation

Map.removeWhere((key, value) => toRemove.contains(key));