mirror of https://github.com/rust-lang/rust
35 lines
554 B
Rust
35 lines
554 B
Rust
//@ run-pass
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struct Counter {
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value: usize
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}
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impl Counter {
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fn new(v: usize) -> Counter {
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Counter {value: v}
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}
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fn inc<'a>(&'a mut self) -> &'a mut Counter {
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self.value += 1;
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self
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}
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fn get(&self) -> usize {
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self.value
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}
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fn get_and_inc(&mut self) -> usize {
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let v = self.value;
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self.value += 1;
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v
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}
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}
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pub fn main() {
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let v = Counter::new(22).get_and_inc();
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assert_eq!(v, 22);
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let v = Counter::new(22).inc().inc().get();
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assert_eq!(v, 24);
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}
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