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c++ Programming Glossary: is_const(Im)perfect forwarding with variadic templates http://stackoverflow.com/questions/13296461/imperfect-forwarding-with-variadic-templates different metacomputations. E.g. And std is_integral T Not is_const T is more conveniant than std integral_constant bool std is_integral.. than std integral_constant bool std is_integral T value is_const T value . I don't recommend any particular strategy because.. those exact terms template typename... Args EnableIf std is_constructible foo_impl Args... ... foo Args ... args Benefit This..
C++ compile-time constant detection http://stackoverflow.com/questions/3299834/c-compile-time-constant-detection really a valid C Is there a way to get rid of these macros is_const can't be a function because the function dependence won't work.. chk2 void return 0 static int chk2 Temp return 0 #define is_const_0 X sizeof chkconst chk2 X sizeof int #define is_const_0i X.. is_const_0 X sizeof chkconst chk2 X sizeof int #define is_const_0i X sizeof chkconst chk2 X sizeof char #define is_const X is_const_0..
Type decision based on existence of nested typedef http://stackoverflow.com/questions/3980879/type-decision-based-on-existence-of-nested-typedef sizeof test T 0 sizeof yes template typename T struct is_const static const bool value false template typename T struct is_const.. static const bool value false template typename T struct is_const const T static const bool value true template typename bool.. T false typedef typename value_type_switch T is_const T value type type template typename T struct element typedef..
Preventing non-const lvalues from resolving to rvalue reference instead of const lvalue reference http://stackoverflow.com/questions/7748104/preventing-non-const-lvalues-from-resolving-to-rvalue-reference-instead-of-const T type Tr typedef typename remove_cv Tr type Trcv if is_const Tr value cout const if is_volatile Tr value cout volatile std..
Detecting the parameter types in a Spirit semantic action http://stackoverflow.com/questions/9404189/detecting-the-parameter-types-in-a-spirit-semantic-action print_the_type std cout std cout typeid T .name if std is_const typename std remove_reference T type value std cout const if..
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