The concept BinaryPredicate is a set of requirements expected by some of the standard library facilities from the user-provided arguments.
Given a BinaryPredicate bin_pred and a pair of iterators iter1 and iter2 or an iterator iter and a value value, the expression bin_pred(*iter1, *iter2) or, respectively, bin_pred(*iter, value), must be contextually convertible to bool.
In addition, evaluation of that expression is not allowed to call non-const member functions of the dereferenced iterators.
Requirements
-
Predicate -
CopyConstructible(unless otherwise specified)
Standard library
The following standard library facilities expect a BinaryPredicate which isn't a Compare type.
| removes consecutive duplicate elements (public member function of std::forward_list) | |
| removes consecutive duplicate elements (public member function of std::list) | |
| finds the last sequence of elements in a certain range (function template) | |
| searches for any one of a set of elements (function template) | |
| finds the first two adjacent items that are equal (or satisfy a given predicate) (function template) | |
| finds the first position where two ranges differ (function template) | |
| determines if two sets of elements are the same (function template) | |
| (C++11) | determines if a sequence is a permutation of another sequence (function template) |
| searches for a range of elements (function template) | |
| searches for a number consecutive copies of an element in a range (function template) | |
| removes consecutive duplicate elements in a range (function template) | |
| creates a copy of some range of elements that contains no consecutive duplicates (function template) | |
constructs custom std::binary_negate object (function template) | |
| (since C++11) | collection of unique keys, hashed by keys (class template) |
| (since C++11) | collection of key-value pairs, hashed by keys, keys are unique (class template) |
| (since C++11) | collection of keys, hashed by keys (class template) |
| (since C++11) | collection of key-value pairs, hashed by keys (class template) |
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