3168fe06ff
are currently inferred. New rules are coming that will require them to be explicit. All add some explicit self declarations.
42 lines
1.2 KiB
Rust
42 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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pub struct Flag<'self> {
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name: &'self str,
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desc: &'self 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<'self> {
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fn set_desc(self, s: &str) -> Flag<'self> {
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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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