mirror of https://github.com/rust-lang/rust
30 lines
560 B
Rust
30 lines
560 B
Rust
#![crate_name="static_methods_crate"]
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#![crate_type = "lib"]
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pub trait read: Sized {
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fn readMaybe(s: String) -> Option<Self>;
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}
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impl read for isize {
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fn readMaybe(s: String) -> Option<isize> {
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s.parse().ok()
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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 {
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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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_ => panic!("read panicked!")
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}
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}
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