Concept Subspace :: sus :: iter :: Extend
template <class Collection, class ItemType>concept Extend
requires
requires(Collection c, __private::IntoIteratorArchetype<ItemType>&& iter) { { c.extend(::sus::move(iter)) } -> std::same_as<void>;}
Extend a collection with the contents of an iterator.
Iterators produce a series of values, and collections can also be thought of
as a series of values. The Extend concept bridges this gap, allowing you to
extend a collection by including the contents of that iterator. When
extending a collection with an already existing key, that entry is updated
or, in the case of collections that permit multiple entries with equal keys,
that entry is inserted.