Joshua Litt
617e05ee49
Change-Id: If452f1bf1e36c3dcf5947beff6ff07be01674217 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/194202 Commit-Queue: Joshua Litt <joshualitt@google.com> Reviewed-by: Sigmund Cherem <sigmund@google.com>
30 lines
1.0 KiB
Dart
30 lines
1.0 KiB
Dart
// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// @dart = 2.7
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/*library:
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a_pre_fragments=[p1: {units: [1{lib}], usedBy: [], needs: []}],
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b_finalized_fragments=[f1: [1{lib}]],
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c_steps=[lib=(f1)]
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*/
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import 'lib.dart' deferred as lib;
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/*member: main:member_unit=main{}*/
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main() async {
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await lib.loadLibrary();
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// inferred return-type in closures:
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// lib.B f1() => lib.B(); // Compile time error(see tests/web)
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var f2 = /*closure_unit=main{}*/ () =>
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lib.B(); // no compile error, but f1 has inferred type: () -> d.B
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// inferred type-arguments
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// lib.list = <lib.B>[]; // Compile time error(see tests/web)
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lib.list = []; // no error, but type parameter was injected here
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lib.list = lib.list
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.map(/*closure_unit=main{}*/ (x) => x.value)
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.toList(); // no Compile error, type parameter inferred on closure and map<T>.
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}
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