c++ Programming Glossary: traits
Best introduction to C++ template metaprogramming? http://stackoverflow.com/questions/112277/best-introduction-to-c-template-metaprogramming at Compile Time 2.9 NullType and EmptyType and 2.10 Type Traits . The best intermediate advanced resource I've found is C Template..
Programs compiles in g++ but exits with linker errors in gcc http://stackoverflow.com/questions/1221902/programs-compiles-in-g-but-exits-with-linker-errors-in-gcc function #include iostream using namespace std A default Traits class has no information template class T struct Traits A convenient.. Traits class has no information template class T struct Traits A convenient way to get the Traits of the type of a given value.. template class T struct Traits A convenient way to get the Traits of the type of a given value without having to explicitly write..
No matching constructor for initalization of 'ostream_iterator<int>' http://stackoverflow.com/questions/17824266/no-matching-constructor-for-initalization-of-ostream-iteratorint looks like template class T class CharT char class Traits std char_traits charT class ostream_iterator ... whereas the..
Pass by reference more expensive than pass by value http://stackoverflow.com/questions/2108084/pass-by-reference-more-expensive-than-pass-by-value required when passing by reference. See Boost's Call Traits . The template class call_traits T encapsulates the best method..
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 constructor other than compiler provided type traits Traits classes can be defined to check if a C class has a member variable.. function or a type see here . Curiously the ConceptTraits do not include traits to check if a C class defines a default..
How to deduce class type from method type in C++ templates? http://stackoverflow.com/questions/3830491/how-to-deduce-class-type-from-method-type-in-c-templates bool foo return true Base x template typename T struct Traits typedef bool T BoolMethodPtr template typename T void Run typename.. bool T BoolMethodPtr template typename T void Run typename Traits T BoolMethodPtr check T y dynamic_cast T x std cout y check.. generics traits share improve this question The T in Traits T BoolMethodPtr is in a non deduced context so the compiler..
What is the point of STL Character Traits? http://stackoverflow.com/questions/5319770/what-is-the-point-of-stl-character-traits is the point of STL Character Traits I notice that in my copy of the SGI STL reference there is.. of the SGI STL reference there is a page about Character Traits but I can't see how these are used Do they replace the string.h.. method on std string doesn't make use of the Character Traits length method. Why do Character Traits exist and are they ever..
Identifying primitive types in templates http://stackoverflow.com/questions/580922/identifying-primitive-types-in-templates by yourself and use is_fundamental from the Boost Type Traits Library which seems to do exactly the same. share improve this..
Template parameters not used in partial specialization http://stackoverflow.com/questions/6398912/template-parameters-not-used-in-partial-specialization T struct S typedef int type template typename T struct Traits template typename T struct Traits typename S T type How is the.. typename T struct Traits template typename T struct Traits typename S T type How is the compiler supposed to know what..
Why can template instances not be deduced in `std::reference_wrapper`s? http://stackoverflow.com/questions/8513050/why-can-template-instances-not-be-deduced-in-stdreference-wrappers basic_string depends on deduced template parameters CharT Traits no conversions are allowed. This is kind of a chicken and egg..
C++ templates that accept only certain types http://stackoverflow.com/questions/874298/c-templates-that-accept-only-certain-types feature in concert with is_base_of from the Boost Type Traits library template typename T class ObservableList BOOST_STATIC_ASSERT..
Is it okay to inherit implementation from STL containers, rather than delegate? http://stackoverflow.com/questions/2034916/is-it-okay-to-inherit-implementation-from-stl-containers-rather-than-delegate public std vector MyObject public Redeclare all container traits value_type iterator etc... Domain specific constructors more..
Printing lists with commas C++ http://stackoverflow.com/questions/3496982/printing-lists-with-commas-c #include iterator template class T class charT char class traits std char_traits charT class infix_ostream_iterator public std.. template class T class charT char class traits std char_traits charT class infix_ostream_iterator public std iterator std output_iterator_tag.. void void void void std basic_ostream charT traits os charT const delimiter bool first_elem public typedef charT..
trailing return type using decltype with a variadic template function http://stackoverflow.com/questions/3744400/trailing-return-type-using-decltype-with-a-variadic-template-function avoid this recursive call in decltype expr with a custom traits class #include iostream #include type_traits using namespace.. with a custom traits class #include iostream #include type_traits using namespace std template class T typename std add_rvalue_reference..
Pretty-print C++ STL containers http://stackoverflow.com/questions/4850473/pretty-print-c-stl-containers made the accepted answer. My own code uses container type traits which work for me but may cause unexpected behaviour with non.. H_PRETTY_PRINT #define H_PRETTY_PRINT #include type_traits #include iostream #include utility #include tuple namespace.. T typename TChar char typename TCharTraits std char_traits TChar typename TDelimiters delimiters T TChar struct print_container_helper..
Polymorphism in c++ http://stackoverflow.com/questions/5854581/polymorphism-in-c Without these features we'd need explicit casts type traits and or policy classes some verbose error prone mess like template.. f Amount x Policy thirteen x static_cast Amount 2 std cout traits Amount to_double x 1.1 So compiler provided operator overloading..
Is it possible to figure out the parameter type and return type of a lambda? http://stackoverflow.com/questions/7943525/is-it-possible-to-figure-out-the-parameter-type-and-return-type-of-a-lambda type and return type If yes how Basically I want lambda_traits which can be used in following ways auto lambda int i return.. following ways auto lambda int i return long i 10 lambda_traits decltype lambda param_type i i should be int lambda_traits decltype.. decltype lambda param_type i i should be int lambda_traits decltype lambda return_type l l should be long The motivation..
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