Otherwise, if there is a user specialization for std::common_type<T1, T2>, that specialization is used; Otherwise, if std::decay<decltype(false ? std::declval<T1>() : std::declval<T2>())>::type is a valid type,
Exposes the type namedtype, which is the common type of twostd::chrono::durations, whose period is the greatest common divisor ofPeriod1andPeriod2. Member types Member typeDefinition typestd::chrono::duration<typenamestd::common_type<Rep1, Rep2>::type,/* see note */> ...
除了std::common_type和std::basic_common_reference(C++20 起)以外,<type_traits>中定义的模板均不可对由程序定义的类型特化。这包含各种类型特征和std::integral_constant类模板。 std::hash对由程序定义的类型的特化的必须满足散列(Hash)要求。 std::atomic的特化必须拥有弃置的复制构造函数,弃置的复制赋值运算符...
如果|m|、|n| 或|m| 和|n| 的最小公倍数不能表示为 std::common_type_t<M, N> 类型的值,则行为未定义。 参数m, n - 整数值 返回值若m 或n 任一者为零,则返回零。否则,返回 |m| 与|n| 的最小公倍数。 异常不抛异常。 注解功能特性测试宏值标准功能特性 __cpp_lib_gcd_lcm 201606L...
Common mathematical functions Floating-point environment(C99) Pseudo-random number generation Complex number arithmetic(C99) Type-generic math(C99) Bit manipulation(C23) Checked integer arithmetic(C23) Concurrency support library(C11) Technical specifications ...
Common mathematical functions Floating-point environment(C99) Pseudo-random number generation Complex number arithmetic(C99) Type-generic math(C99) Bit manipulation(C23) Checked integer arithmetic(C23) Concurrency support library(C11) Technical specifications ...
Type support Program utilities Variadic functions Diagnostics library Dynamic memory management Strings library Null-terminated strings: byte − multibyte − wide Date and time library Localization library Input/output library Algorithms library Numerics library Common mathematical functions...
if ( strpos( $keywrd, "std::" ) !== false ) { $post_keywords = explode( "::", $keywrd); $keywords[] = $post_keywords[ count( $post_keywords ) - 1 ];} else if ( strpos( $keywrd, ":" ) !== false ) { $post_keywords = explode( ":", $keywrd); ...
Several typedefs for common character types are provided: Defined in header <fstream> Type Definition std::ofstream std::basic_ofstream<char> std::wofstream std::basic_ofstream<wchar_t> Member types Member type Definition char_type CharT traits_type Traits; the program is ill-formed ...
Type Original: Type The text has been machine-translated viaGoogle Translate. You can help to correct and verify the translation. Clickherefor instructions. Definition std::stringstd::basic_string<char> std::wstringstd::basic_string<wchar_t> ...