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/Dart 2

provisional top-level constant

const provisional = null

An annotation that was used during development of Dart 2.

Should not be used any more.

Implementation

const Null provisional = null

© 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/provisional-constant.html