mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-23 15:23:46 +00:00
30 lines
560 B
Rust
30 lines
560 B
Rust
#![crate_name="static_methods_crate"]
|
|
#![crate_type = "lib"]
|
|
|
|
pub trait read: Sized {
|
|
fn readMaybe(s: String) -> Option<Self>;
|
|
}
|
|
|
|
impl read for isize {
|
|
fn readMaybe(s: String) -> Option<isize> {
|
|
s.parse().ok()
|
|
}
|
|
}
|
|
|
|
impl read for bool {
|
|
fn readMaybe(s: String) -> Option<bool> {
|
|
match &*s {
|
|
"true" => Some(true),
|
|
"false" => Some(false),
|
|
_ => None
|
|
}
|
|
}
|
|
}
|
|
|
|
pub fn read<T:read>(s: String) -> T {
|
|
match read::readMaybe(s) {
|
|
Some(x) => x,
|
|
_ => panic!("read panicked!")
|
|
}
|
|
}
|