844 B
844 B
[unord.multiset.erasure]
23 Containers library [containers]
23.5 Unordered associative containers [unord]
23.5.7 Class template unordered_multiset [unord.multiset]
23.5.7.3 Erasure [unord.multiset.erasure]
template<class K, class H, class P, class A, class Predicate> constexpr typename unordered_multiset<K, H, P, A>::size_type erase_if(unordered_multiset<K, H, P, A>& c, Predicate pred);
Effects: Equivalent to:auto original_size = c.size();for (auto i = c.begin(), last = c.end(); i != last; ) {if (pred(*i)) { i = c.erase(i); } else {++i; }}return original_size - c.size();