blob: c3704ac7e49797e202b6bfee4724ac344b04049b [file] [log] [blame]
/*
* Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
* for details. All rights reserved. Use of this source code is governed by a
* BSD-style license that can be found in the LICENSE file.
*/
/**
* @assertion A for statement of the form for (finalConstVarOrType? id in e) s
* is equivalent to the following code:
* var n0 = e.iterator;
* while (n0.moveNext()) {
* finalConstVarOrType? id = n0.current;
* s
* }
* where n0 is an identifier that does not occur anywhere in the program, except
* that for purposes of static typechecking, it is checked under the assumption
* that n0 is declared to be of type T, where T is the static type of e.iterator.
* @description Checks that s is not evaluated if e is empty.
* @author vasya
*/
import '../../../../Utils/expect.dart';
void check(var e) {
var b = false;
for (var id in e) {
b = true;
}
Expect.isFalse(b);
}
main() {
check([]);
check(new Set());
}