Compounds | |
| class | binary_negate |
| One of the negation functors@endlink. More... | |
| class | unary_negate |
| One of the negation functors@endlink. More... | |
Functions | |
| template<class _Predicate> unary_negate< _Predicate > | not1 (const _Predicate &__pred) |
| One of the negation functors@endlink. | |
| template<class _Predicate> binary_negate< _Predicate > | not2 (const _Predicate &__pred) |
| One of the negation functors@endlink. | |
not1 and not2 each take a predicate functor and return an instance of unary_negate or binary_negate, respectively. These classes are functors whose operator() performs the stored predicate function and then returns the negation of the result.
For example, given a vector of integers and a trivial predicate,
struct IntGreaterThanThree : public std::unary_function<int, bool> { bool operator() (int x) { return x > 3; } }; std::find_if (v.begin(), v.end(), not1(IntGreaterThanThree()));
find_if will locate the first index (i) of v for which "!(v[i] > 3)" is true.
The not1/unary_negate combination works on predicates taking a single argument. The not2/binary_negate combination works on predicates which take two arguments.
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One of the negation functors@endlink.
Definition at line 286 of file stl_function.h. |
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One of the negation functors@endlink.
Definition at line 311 of file stl_function.h. |
1.2.18-20021030