44 lines
1.2 KiB
Rust
44 lines
1.2 KiB
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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mod argparse {
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extern mod std;
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use either::{Either, Left, Right};
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pub struct Flag {
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name: &str,
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desc: &str,
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max_count: uint,
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value: uint
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}
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pub fn flag(name: &r/str, desc: &r/str) -> Flag/&r {
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Flag { name: name, desc: desc, max_count: 1, value: 0 }
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}
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pub impl Flag {
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fn set_desc(self, s: &str) -> Flag {
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Flag { //~ ERROR cannot infer an appropriate lifetime
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name: self.name,
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desc: s,
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max_count: self.max_count,
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value: self.value
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}
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}
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}
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}
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fn main () {
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let f : argparse::Flag = argparse::flag(~"flag", ~"My flag");
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let updated_flag = f.set_desc(~"My new flag");
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assert updated_flag.desc == "My new flag";
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}
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