标签: unary-operator 在调用std :: numeric_limits <unsigned char>成员之前,一元"+"的目的是什么? 我在cppreference的文档中看到了这个例子std::numeric_limits #include <limits> #include <iostream> int main() { std::cout << "type\tlowest()\tmin()\t\tmax()\n\n"; std::cout << "uchar\...
<cpp |utility |functional Function objects template< classArg, classResult >classpointer_to_unary_function:publicstd::unary_function<Arg, Result>; (deprecated in C++11) (removed in C++17) std::pointer_to_unary_functionis a function object that acts as a wrapper around a unary function...
The binary function to be converted. left The object that the*pfuncis called on. Return Value The class template stores a copy ofpfunc. It defines its member functionoperator()as returning (*pfunc)(_Left). Remarks A unary function pointer is a function object and may be passed to any C++...
clang/test/SemaCXX/cxx2b-deducing-this.cpp Original file line numberDiff line numberDiff line change @@ -19,7 +19,7 @@ struct S { // new and delete are implicitly static void *operator new(this unsigned long); // expected-error{{an explicit object parameter cannot appear in a stati...
Date and time Function objects Formatting library (C++20) bitset hash (C++11) Relational operators (deprecated in C++20) rel_ops::operator!=rel_ops::operator> rel_ops::operator<=rel_ops::operator>= Integer comparison functions cmp_equalcmp_lesscmp_less_than (C++20)(C++20)(C++20) cmp_...
The binary function to be converted. left The object that the*pfuncis called on. Return Value The class template stores a copy ofpfunc. It defines its member functionoperator()as returning (*pfunc)(_Left). Remarks A unary function pointer is a function object and may be passed to any C++...
(removed in C++17) std::unary_functionis a base class for creating function objects with one argument. std::unary_functiondoes not defineoperator(); it is expected that derived classes will define this.std::unary_functionprovides only two types -argument_typeandresult_type- defined by the tem...
The binary function to be converted. left The object that the*pfuncis called on. Return Value The class template stores a copy ofpfunc. It defines its member functionoperator()as returning (*pfunc)(_Left). Remarks A unary function pointer is a function object and may be passed to any C++...
usingbinary_transform_result=ranges::in_in_out_result<I1, I2, O>; (6)(since C++20) Applies the given function to a range and stores the result in another range, beginning atresult. 1)The unary operationopis applied to the range defined by[first1,last1)(after projecting with the proje...
pfunc The binary function to be converted.left The object that the *pfunc is called on.Return ValueThe class template stores a copy of pfunc. It defines its member function operator() as returning (* pfunc)(_ Left).RemarksA unary function pointer is a function object and may be passed...