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c++ Programming Glossary: functorhttp://stackoverflow.com/questions/1613230/uses-of-c-comma-operator in standard C. As another additional note in C language functor based programming plays an important role which can be seen..
What is the point of function pointers? http://stackoverflow.com/questions/2592137/what-is-the-point-of-function-pointers In C this is often done using function objects also called functors . These are objects that overload the function call operator.. can call them as if they were a function. Example class functor public void operator int i std cout the answer is i ' n' functor.. public void operator int i std cout the answer is i ' n' functor f f 42 The idea behind this is that unlike a function pointer..
demote boost::function to a plain function pointer http://stackoverflow.com/questions/282372/demote-boostfunction-to-a-plain-function-pointer can avoid storing a boost function and just pass the bound functor directly but then I get similar error error C2664 'blah void.. _bi bind_t R F L ' to 'void __cdecl type void ' c boost functor share improve this question Has anyone noticed that the..
http://stackoverflow.com/questions/356950/c-functors-and-their-uses Functors and their uses I keep hearing a lot about functors in C can someone give me an overview as to what they are and.. to what they are and in what cases they would be useful c functor function call operator share improve this question A functor.. function call operator share improve this question A functor is pretty much just a class which defines the operator . That..
http://stackoverflow.com/questions/5450159/type-erasure-techniques like Boost.Function does to hide the real type of the functor. For now because both examples are rather lengthy I'll link..
What is a lambda expression in C++11? http://stackoverflow.com/questions/7627098/what-is-a-lambda-expression-in-c11 can also be quite cumbersome to use particularly if the functor you would like to apply is unique to the particular function... tempted to write something like the following to keep the functor local void func2 std vector int v struct void operator int do.. introduces lambdas allow you to write an inline anonymous functor to replace the struct f . For small simple examples this can..
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 This is what the forward_subpack algorithm allows doing Functor with variadic call operator that shows the usage of for_each_.. for implementing functor invocation namespace detail Functor invocation is realized through variadic inheritance. The constructor..
Avoiding if statement inside a for loop? http://stackoverflow.com/questions/16871471/avoiding-if-statement-inside-a-for-loop set #include vector template typename Container typename Functor typename Index std size_t void for_each_indexed const Container.. Index std size_t void for_each_indexed const Container c Functor f Index index 0 for const auto e c f index e int main using..
http://stackoverflow.com/questions/317450/why-override-operator acc cout acc 10 endl prints 10 cout acc 20 endl prints 30 Functors are heavily used with generic programming. Many STL algorithms.. like that template typename InputIterator typename Functor void for_each InputIterator first InputIterator last Functor.. void for_each InputIterator first InputIterator last Functor f while first last f first You see that this algorithm is very..
Pretty-print C++ STL containers http://stackoverflow.com/questions/4850473/pretty-print-c-stl-containers wchar_t delimiters std pair T1 T2 wchar_t values L L L Functor to print containers. You can use this directly if you want to.. wchar_t delimiters std pair T1 T2 wchar_t values L L L Functor to print containers. You can use this directly if you want to..
C++ can compilers inline a function pointer? http://stackoverflow.com/questions/4860762/c-can-compilers-inline-a-function-pointer function The object passed to it may be a functor struct Functor void operator const std cout functor std endl a function void.. function std cout lambda std endl int main functionProxy Functor functionProxy function functionProxy std cout lambda std endl.. void functionProxy Function function function struct Functor void operator const std cout functor std endl void function..
Does vector::erase() on a vector of object pointers destroy the object itself? http://stackoverflow.com/questions/6353149/does-vectorerase-on-a-vector-of-object-pointers-destroy-the-object-itself of for_each templates as @Billy pointed out in comments Functor for deleting pointers in vector. template class T class DeleteVector.. Your class class myclass public int i myclass i 10 Functor for deleting pointers in vector. template class T class DeleteVector..
http://stackoverflow.com/questions/901907/how-to-use-typelists R class t0 class t1 class t2 class t3 class t4 R call Loki Functor R LOKI_TYPELIST_5 t0 t1 t2 t3 t4 func Loki Tuple LOKI_TYPELIST_5.. c h z s g endl return h 1 int main int argc char argv Loki Functor int LOKI_TYPELIST_5 ostream int float string int f foo ... pass..
http://stackoverflow.com/questions/9568150/what-is-a-c-delegate object may be created by implementing operator struct Functor Normal class struct members int operator double d Arbitrary.. return types and parameter list return int d 1 Use Functor f int i f 3.14 Option 2 lambda expressions C 11 only Syntax..
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