23 lines
683 B
Rust
23 lines
683 B
Rust
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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fn plus_one(f: &fn() -> int) -> int {
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return f() + 1;
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}
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fn ret_plus_one() -> extern fn(&fn() -> int) -> int {
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return plus_one;
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}
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pub fn main() {
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let z = do (ret_plus_one()) || { 2 };
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assert!(z == 3);
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}
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