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/Dart 2

isNaN property

bool isNaN

True if the number is the double Not-a-Number value; otherwise, false.

Implementation

bool get isNaN;

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