¡@

Home 

c++ Programming Glossary: is_default_constructible

Should (in C++11) std::vector::resize(size_type) work for the default constructible value_type int[4]?

http://stackoverflow.com/questions/12192895/should-in-c11-stdvectorresizesize-type-work-for-the-default-constructi

std typedef int block 4 vector block A static_assert is_default_constructible block value does not fire A.resize 100 compiler error So.. bug is in the standard itself 20.9.4.3 3 specifies std is_default_constructible T as equivalent to std is_constructible T where 20.9.4.3 6 specifies..

Is there a way to test whether a C++ class has a default constructor (other than compiler-provided type traits)?

http://stackoverflow.com/questions/2733377/is-there-a-way-to-test-whether-a-c-class-has-a-default-constructor-other-than

in the program being ill formed. template class T class is_default_constructible template int x class receive_size template class U static int.. r int #include iostream using namespace std int main cerr is_default_constructible int value endl outputs 1 fails to compile access violation FCD.. it's murky q is default constructible but only rarely is_default_constructible q value endl is_default_constructible r value endl outputs 0..

Does the default constructor of std::pair<> set basic types (int, etc) to zero?

http://stackoverflow.com/questions/9025792/does-the-default-constructor-of-stdpair-set-basic-types-int-etc-to-zero

the C 11 standard §20.3.2 2 3 constexpr pair 2 Requires is_default_constructible first_type value is true and is_default_constructible second_type.. is_default_constructible first_type value is true and is_default_constructible second_type value is true . 3 Effects Value initializes first..