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24 lines
659 B
Dart
24 lines
659 B
Dart
// Copyright 2018 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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/// This function can be used to call a const constructor in such a way as to
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/// create a new instance rather than creating the common const instance.
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///
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/// ```dart
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/// class A {
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/// const A(this.i);
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/// int i;
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/// }
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///
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/// main () {
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/// // prevent prefer_const_constructors lint
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/// new A(nonconst(null));
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///
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/// // prevent prefer_const_declarations lint
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/// final int $null = nonconst(null);
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/// final A a = nonconst(const A(null));
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/// }
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/// ```
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T nonconst<T>(T t) => t;
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