// Copyright (c) 2017, 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.md file. | |
class Isgen<B> { | |
getfn() { | |
return (x) => x is B; | |
} | |
} | |
main() { | |
int x = 3; | |
var isgen = new Isgen<String>(); | |
var iser = isgen.getfn(); | |
assert(!iser(x)); | |
} |