16 lines
329 B
Rust
16 lines
329 B
Rust
class finish<T: copy> {
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let arg: {val: T, fin: native fn(T)};
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new(arg: {val: T, fin: native fn(T)}) {
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self.arg = arg;
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}
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drop { self.arg.fin(self.arg.val); }
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}
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fn main() {
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let box = @mut 10;
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fn dec_box(&&i: @mut int) { *i -= 1; }
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{ let _i <- finish({val: box, fin: dec_box}); }
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assert (*box == 9);
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}
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