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std::erase_if (std::set)

From cppreference.com
< cpp‎ | container‎ | set
Defined in header <set>
template< class Key, class Compare, class Alloc, class Pred >

typename std::set<Key,Compare,Alloc>::size_type

    erase_if(std::set<Key,Compare,Alloc>& c, Pred pred);
(since C++20)

Erases all elements that satisfy the predicate pred from the container. Equivalent to

auto old_size = c.size();
for (auto i = c.begin(), last = c.end(); i != last; ) {
  if (pred(*i)) {
    i = c.erase(i);
  } else {
    ++i;
  }
}
return old_size - c.size();

Contents

[edit] Parameters

c - container from which to erase
pred - predicate that returns true if the element should be erased

[edit] Complexity

Linear.

[edit] Example

[edit] See also

removes elements satisfying specific criteria
(function template) [edit]