9 lines
233 B
Rust
9 lines
233 B
Rust
resource finish[T](arg: {val: T, fin: fn(&T) }) { arg.fin(arg.val); }
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fn main() {
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let box = @mutable 10;
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fn dec_box(i: &@mutable 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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} |