rust/src/test/run-pass/block-iter-1.rs

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fn iter_vec<T>(v: &[T], f: &block(&T)) { for x: T in v { f(x); } }
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fn main() {
let v = [1, 2, 3, 4, 5, 6, 7];
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let odds = 0;
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iter_vec(v,
{|&i| log_err i; if i % 2 == 1 { odds += 1; } log_err odds; });
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log_err odds;
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assert (odds == 4);
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}