W3cubDocs

/Dart 2

length property

int length

Returns the number of elements in this.

Counting all elements may involve iterating through all elements and can therefore be slow. Some iterables have a more efficient way to find the number of elements.

Implementation

int get length => _elementCount;

© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/2.0.0/dart-collection/DoubleLinkedQueue/length.html