42 lines
1.0 KiB
Rust
42 lines
1.0 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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#![crate_id="static_methods_crate#0.1"]
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#![crate_type = "lib"]
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use std::int;
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pub trait read {
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fn readMaybe(s: String) -> Option<Self>;
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}
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impl read for int {
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fn readMaybe(s: String) -> Option<int> {
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from_str::<int>(s.as_slice())
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}
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}
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impl read for bool {
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fn readMaybe(s: String) -> Option<bool> {
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match s.as_slice() {
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"true" => Some(true),
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"false" => Some(false),
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_ => None
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}
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}
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}
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pub fn read<T:read>(s: String) -> T {
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match read::readMaybe(s) {
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Some(x) => x,
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_ => fail!("read failed!")
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}
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}
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