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core: Docs

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Brian Anderson 2012-03-15 18:58:14 -07:00
parent 07d0981bbb
commit 389f53c6ff
5 changed files with 71 additions and 12 deletions
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5
src/libcore/tuple.rs
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@ -1,13 +1,18 @@
#[doc = "Operations on tuples"];
#[doc = "Return the first element of a pair"]
pure fn first<T:copy, U:copy>(pair: (T, U)) -> T {
let (t, _) = pair;
ret t;
}
#[doc = "Return the second element of a pair"]
pure fn second<T:copy, U:copy>(pair: (T, U)) -> U {
let (_, u) = pair;
ret u;
}
#[doc = "Return the results of swapping the two elements of a pair"]
pure fn swap<T:copy, U:copy>(pair: (T, U)) -> (U, T) {
let (t, u) = pair;
ret (u, t);