19 lines
344 B
Rust
19 lines
344 B
Rust
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struct MyStruct {
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niečo: String,
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}
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impl MyStruct {
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fn add(&mut self) {
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self.niečo.push(char::from_digit(2, 2).unwrap());
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}
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}
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trait Countable {
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fn count(&self) -> usize;
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}
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impl Countable for MyStruct {
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fn count(&self) -> usize {
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self.niečo.len()
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}
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}
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fn smt(var: Box<dyn Countable>) {
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var.count();
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}
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