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* Implemented C++20 contains() for associative containers as specified in P0458R2.

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* Fixed serious bug in heterogeneous lookup functions (is_transparent was broken).
This commit is contained in:
Ion Gaztañaga
2018-08-13 15:36:00 +02:00
parent 1ad64316a4
commit 139db663a3
16 changed files with 220 additions and 16 deletions
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include/boost/container/flat_set.hpp
+24
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@@ -912,6 +912,23 @@ class flat_set
{ return static_cast<size_type>(this->tree_t::find(x) != this->tree_t::cend()); }
#if defined(BOOST_CONTAINER_DOXYGEN_INVOKED)
//! <b>Returns</b>: Returns true if there is an element with key
//! equivalent to key in the container, otherwise false.
//!
//! <b>Complexity</b>: log(size()).
bool contains(const key_type& x) const;
//! <b>Requires</b>: This overload is available only if
//! key_compare::is_transparent exists.
//!
//! <b>Returns</b>: Returns true if there is an element with key
//! equivalent to key in the container, otherwise false.
//!
//! <b>Complexity</b>: log(size()).
template<typename K>
bool contains(const K& x) const;
//! <b>Returns</b>: An iterator pointing to the first element with key not less
//! than k, or a.end() if such an element is not found.
//!
@@ -1685,6 +1702,13 @@ class flat_multiset
//! @copydoc ::boost::container::flat_set::count(const key_type& ) const
size_type count(const key_type& x) const;
//! @copydoc ::boost::container::flat_set::contains(const key_type& ) const
bool contains(const key_type& x) const;
//! @copydoc ::boost::container::flat_set::contains(const K& ) const
template<typename K>
bool contains(const K& x) const;
//! @copydoc ::boost::container::flat_set::lower_bound(const key_type& )
iterator lower_bound(const key_type& x);