BinaryPredicate
C++概念：二元预测
概念BinaryPredicate是由用户提供的参数中的一些标准库工具所期望的一组需求。
给出BinaryPredicatebin_pred和一对迭代器iter1和iter2或者迭代器iter和价值value，表达bin_pred(*iter1, *iter2)或者，分别，bin_pred(*iter, value)，一定是上下文可转换到bool...
此外，该表达式的计算不允许调用取消引用的迭代器的非Const成员函数。
所需
Predicate
CopyConstructible%28，除非另有指明，%29
标准库
以下标准库设施期望BinaryPredicate是%27T aCompare类型。
| unique | removes consecutive duplicate elements (public member function of std::forward_list) |
|---|---|
| unique | removes consecutive duplicate elements (public member function of std::list) |
| find_end | finds the last sequence of elements in a certain range (function template) |
| find_first_of | searches for any one of a set of elements (function template) |
| adjacent_find | finds the first two adjacent items that are equal (or satisfy a given predicate) (function template) |
| mismatch | finds the first position where two ranges differ (function template) |
| equal | determines if two sets of elements are the same (function template) |
| is_permutation (C++11) | determines if a sequence is a permutation of another sequence (function template) |
| search | searches for a range of elements (function template) |
| search_n | searches for a number consecutive copies of an element in a range (function template) |
| unique | removes consecutive duplicate elements in a range (function template) |
| unique_copy | creates a copy of some range of elements that contains no consecutive duplicates (function template) |
| not2 (deprecated) | constructs custom std::binary_negate object (function template) |
| unordered_set (since C++11) | collection of unique keys, hashed by keys (class template) |
| unordered_map (since C++11) | collection of key-value pairs, hashed by keys, keys are unique (class template) |
| unordered_multiset (since C++11) | collection of keys, hashed by keys (class template) |
| unordered_multimap (since C++11) | collection of key-value pairs, hashed by keys (class template) |
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