bjoernager/rust
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Added a method to convert sets to vectors.

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This commit is contained in:
Eric Holk 2012-05-16 15:45:06 -07:00
parent aec0b51d9c
commit 3c48759a56
1 changed files with 13 additions and 0 deletions
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13
src/libstd/map.rs
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@ -5,6 +5,7 @@ export hashmap, hashfn, eqfn, set, map, chained, hashmap, str_hash;
export bytes_hash, int_hash, uint_hash, set_add; export bytes_hash, int_hash, uint_hash, set_add;
export hash_from_vec, hash_from_strs, hash_from_bytes; export hash_from_vec, hash_from_strs, hash_from_bytes;
export hash_from_ints, hash_from_uints; export hash_from_ints, hash_from_uints;
export vec_from_set;
#[doc = " #[doc = "
A function that returns a hash of a value A function that returns a hash of a value
@ -331,6 +332,18 @@ Convenience function for adding keys to a hashmap with nil type keys
"] "]
fn set_add<K: copy>(set: set<K>, key: K) -> bool { ret set.insert(key, ()); } fn set_add<K: copy>(set: set<K>, key: K) -> bool { ret set.insert(key, ()); }
#[doc = "
Convert a set into a vector.
"]
fn vec_from_set<T: copy>(s: set<T>) -> [T] {
let mut v = [];
s.each_key() {|k|
v += [k];
true
};
v
}
#[doc = "Construct a hashmap from a vector"] #[doc = "Construct a hashmap from a vector"]
fn hash_from_vec<K: copy, V: copy>(hasher: hashfn<K>, eqer: eqfn<K>, fn hash_from_vec<K: copy, V: copy>(hasher: hashfn<K>, eqer: eqfn<K>,
items: [(K, V)]) -> hashmap<K, V> { items: [(K, V)]) -> hashmap<K, V> {