mirror of
https://github.com/flutter/flutter.git
synced 2025-06-03 00:51:18 +00:00
24 lines
667 B
Dart
24 lines
667 B
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file.
|
|
|
|
/// This function can be used to call a const constructor in such a way as to
|
|
/// create a new instance rather than creating the common const instance.
|
|
///
|
|
/// ```dart
|
|
/// class A {
|
|
/// const A(this.i);
|
|
/// final int? i;
|
|
/// }
|
|
///
|
|
/// void main () {
|
|
/// // prevent prefer_const_constructors lint
|
|
/// A(nonconst(null));
|
|
///
|
|
/// // prevent prefer_const_declarations lint
|
|
/// final int? $null = nonconst(null);
|
|
/// final A a = nonconst(const A(null));
|
|
/// }
|
|
/// ```
|
|
T nonconst<T>(T t) => t;
|