string::swap
Swap the contents.
Synopsis
void
swap(
string& other);Description
Exchanges the contents of this string with another string. Ownership of the respective boost::container::pmr::memory_resource objects is not transferred.
-
If
&other == this, do nothing. Otherwise, -
if
*other.storage() == *this->storage(), ownership of the underlying memory is swapped in constant time, with no possibility of exceptions. All iterators and references remain valid. Otherwise, -
the contents are logically swapped by making copies, which can throw. In this case all iterators and references are invalidated.
Complexity
Constant or linear in size() + other.size().
Exception Safety
Strong guarantee. Calls to memory_resource::allocate may throw.