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c++ Programming Glossary: constexprWhen does a constexpr function get evaluated at compile time? http://stackoverflow.com/questions/14248235/when-does-a-constexpr-function-get-evaluated-at-compile-time does a constexpr function get evaluated at compile time Since it is possible.. time Since it is possible that a function declared as constexpr can be called during run time under which criteria does the.. or during runtime template typename base_t typename expo_t constexpr base_t POW base_t base expo_t expo return expo 0 base POW base..
How to make generic computations over heterogeneous argument packs of a variadic template function? http://stackoverflow.com/questions/14261183/how-to-make-generic-computations-over-heterogeneous-argument-packs-of-a-variadic processing template typename... Ts void foo Ts ... args constexpr s sizeof... args static for int i 0 i s 2 i Do something foo.. template typename... Ts void split_and_print Ts ... args constexpr size_t packSize sizeof... args constexpr size_t halfSize packSize.. Ts ... args constexpr size_t packSize sizeof... args constexpr size_t halfSize packSize 2 cout Printing first half endl for_each_in_arg_pack_subset..
Is there a standard sign function (signum, sgn) in C/C++? http://stackoverflow.com/questions/1903954/is-there-a-standard-sign-function-signum-sgn-in-c-c this by using some overloads template typename T inline constexpr int signum T x std false_type is_signed return T 0 x template.. is_signed return T 0 x template typename T inline constexpr int signum T x std true_type is_signed return T 0 x x T 0 template.. is_signed return T 0 x x T 0 template typename T inline constexpr int signum T x return signum x std is_signed T Which is a good..
What new capabilities do user-defined literals add to C++? http://stackoverflow.com/questions/237804/what-new-capabilities-do-user-defined-literals-add-to-c bool valid High '0' High '1' template char... Bits inline constexpr std bitset sizeof... Bits operator _bits noexcept static_assert..
Is `long` guaranteed to be at least 32 bits? http://stackoverflow.com/questions/4329777/is-long-guaranteed-to-be-at-least-32-bits 18.3.1.2 numeric.limits.members in the C standard static constexpr T min throw Equivalent to CHAR_MIN SHRT_MIN FLT_MIN DBL_MIN.. to CHAR_MIN SHRT_MIN FLT_MIN DBL_MIN etc. static constexpr T max throw Equivalent to CHAR_MAX SHRT_MAX FLT_MAX DBL_MAX..
What breaking changes are introduced in C++11? http://stackoverflow.com/questions/6399615/what-breaking-changes-are-introduced-in-c11 _x . New keywords alignas alignof char16_t char32_t constexpr decltype noexcept nullptr static_assert and thread_local Certain..
Checking a member exists, possibly in a base class, C++11 version http://stackoverflow.com/questions/9530928/checking-a-member-exists-possibly-in-a-base-class-c11-version does not exist or is not accessible template typename T constexpr auto has_reserve_method T t decltype t.reserve 0 bool return.. Used as fallback when SFINAE culls the template method constexpr bool has_reserve_method ... return false You can then use this..
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