Erase all the elements in the specified map m that satisfy the specified predicate predicate. Return the number of elements erased.
Declared in <bslstl_map.h>
template<
class KEY,
class VALUE,
class COMPARATOR,
class ALLOCATOR,
class PREDICATE>
bsl::map<KEY, VALUE, COMPARATOR, ALLOCATOR>::size_type
erase_if(
map<KEY, VALUE, COMPARATOR, ALLOCATOR>& m,
PREDICATE predicate);