std::locale getloc() const; Returns the current locale associated with the stream. Parameters (none). Return value the locale object associated with the stream. Example #include <iostream> #include <ctime> #include <iomanip> #include <codecvt> int main() { std::wbuffer_convert<std::codecvt_utf8<wchar_t>> conv(std::cout.rdbuf()); std::wostream out(&conv); out.imbue(std::locale(out.getloc(), new s

size_type size() const; Returns the number of elements in the container, i.e. std::distance(begin(), end()). Parameters (none). Return value The number of elements in the container. Exceptions (none) (until C++11) noexcept specification: noexcept (since C++11) Complexity Constant. Example The following code uses size to display the number of elements in a std::deque: #include <deque> #include <iostream> int main() { std::deque<int> nums {1, 3

void unlock(); (since C++11) Unlocks the associated mutex and releases ownership. std::system_error is thrown if there is no associated mutex or if the mutex is not locked. Parameters (none). Return value (none). Exceptions Any exceptions thrown by mutex()->unlock() If there is no associated mutex or the mutex is not locked, std::system_error with an error code of std::errc::operation_not_permitted Example See also lock locks the associated mutex (public memb

Defined in header <csetjmp> #define setjmp(env) /* implementation-defined */ Saves the current execution context into a variable env of type std::jmp_buf. This variable can later be used to restore the current execution context by std::longjmp function. That is, when a call to std::longjmp function is made, the execution continues at the particular call site that constructed the std::jmp_buf variable passed to std::longjmp. In that case setjmp returns the value passed to st

Defined in header <cctype> int isalpha( int ch ); Checks if the given character is an alphabetic character as classified by the currently installed C locale. In the default locale, the following characters are alphabetic: uppercase letters ABCDEFGHIJKLMNOPQRSTUVWXYZ lowercase letters abcdefghijklmnopqrstuvwxyz In locales other than "C", an alphabetic character is a character for which std::isupper() or std::islower() returns non-zero or any other character considered

Converts between types by reinterpreting the underlying bit pattern. Syntax reinterpret_cast < new_type > ( expression ) Returns a value of type new_type. Explanation Unlike static_cast, but like const_cast, the reinterpret_cast expression does not compile to any CPU instructions. It is purely a compiler directive which instructs the compiler to treat the sequence of bits (object representation) of expression as if it had the type new_type. Only the following conversions can

std::exception_ptr nested_ptr() const; (since C++11) Returns a pointer to the stored exception, if any. Parameters (none). Return value (none). Exceptions noexcept specification: noexcept

const Engine& base() const; (since C++11) Returns the underlying engine. Parameters (none). Return value The underlying engine. Exceptions noexcept specification: noexcept

void reset(); (since C++11) Resets the internal state of the distribution object. After a call to this function, the next call to operator() on the distribution object will not be dependent on previous calls to operator(). Parameters (none). Return value (none). Complexity Constant.

Defined in header <numeric> template< class InputIt, class OutputIt > OutputIt adjacent_difference( InputIt first, InputIt last, OutputIt d_first ); (1) template< class InputIt, class OutputIt, class BinaryOperation > OutputIt adjacent_difference( InputIt first, InputIt last, OutputIt d_first, BinaryOperation op ); (2) Computes the differences between the second and the first of each adjacent pa