27 lines
590 B
Rust
27 lines
590 B
Rust
fn w_semi(v: ~[int]) -> int {
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// the semicolon causes compiler not to
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// complain about the ignored return value:
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do vec::foldl(0, v) |x,y| { x+y };
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-10
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}
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fn w_paren1(v: ~[int]) -> int {
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(do vec::foldl(0, v) |x,y| { x+y }) - 10
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}
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fn w_paren2(v: ~[int]) -> int {
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(do vec::foldl(0, v) |x,y| { x+y} - 10)
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}
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fn w_ret(v: ~[int]) -> int {
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ret do vec::foldl(0, v) |x,y| { x+y } - 10;
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}
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fn main() {
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assert w_semi(~[0, 1, 2, 3]) == -10;
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assert w_paren1(~[0, 1, 2, 3]) == -4;
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assert w_paren2(~[0, 1, 2, 3]) == -4;
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assert w_ret(~[0, 1, 2, 3]) == -4;
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}
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