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c++ Programming Glossary: functorsfunction passed as template argument http://stackoverflow.com/questions/1174169/function-passed-as-template-argument question Yes it is valid. As for making it work with functors as well the usual solution is something like this instead template..
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 computed portions of an argument pack to variadic functors Only requires including one relatively short header file Makes.. that prints its input. This is used by the following functors and by some demonstrative test cases in the main routine. struct.. endl Finally since lambdas are just syntactic sugar for functors they can be used as well in combination with the algorithms..
http://stackoverflow.com/questions/14677997/stdfunction-vs-template function s can be used as de facto standard of passing functors and in places where high performance is expected templates should.. the application logic. Some of those callbacks could be functors some could be plain functions some could be the result of binding..
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..
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.. i in i 1 for all i There are a couple of nice things about functors. One is that unlike regular functions they can contain state... nicely customizable. As the last lines show you often pass functors as arguments to other functions such as std transform or the..
http://stackoverflow.com/questions/379053/diamond-inheritance-c Command that implements a method execute I would use functors and probably a templated constructor that takes the command..
http://stackoverflow.com/questions/4421706/operator-overloading operator used to create function objects also known as functors must be defined as a member function so it always has the implicit..
Examples of “modern c++” in action? [closed] http://stackoverflow.com/questions/534311/examples-of-modern-c-in-action a few lines of code because I had the right operators and functors lying around. In addition I've recently been paying more attention..
Advice on a better way to extend C++ STL container with user-defined methods http://stackoverflow.com/questions/679520/advice-on-a-better-way-to-extend-c-stl-container-with-user-defined-methods extend vector in this way use standard algorithm with your functors. e.g. std min_element std max_element int max_a std max_element..
What is a lambda expression in C++11? http://stackoverflow.com/questions/7627098/what-is-a-lambda-expression-in-c11 Lambda functions are just syntactic sugar for anonymous functors. Return types In simple cases the return type of the lambda..
http://stackoverflow.com/questions/9568150/what-is-a-c-delegate in C . Here are the ones that came to my mind. Option 1 functors A function object may be created by implementing operator struct..
convert std::bind to function pointer http://stackoverflow.com/questions/13238050/convert-stdbind-to-function-pointer Unique ID's for each invocation for instance because Functors may already have different types or runtime scope of their usage..
Virtual Methods or Function Pointers http://stackoverflow.com/questions/1955074/virtual-methods-or-function-pointers compile time. FWIW Function Pointers are not the same as Functors. Functors in C are classes that are used to provide a function.. time. FWIW Function Pointers are not the same as Functors. Functors in C are classes that are used to provide a function call which.. pointer prior to loading the function pointer. Using Functors with a non virtual call as a callback are the highest performing..
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..
http://stackoverflow.com/questions/356950/c-functors-and-their-uses Functors and their uses I keep hearing a lot about functors in C can..
Why does C++ not have reflection? http://stackoverflow.com/questions/359237/why-does-c-not-have-reflection C standard library relies on this aggressive optimization. Functors are only performant if the overhead of instantiating and destructing..
Where to define C++ class member template function and functors that instantiate it? http://stackoverflow.com/questions/4315969/where-to-define-c-class-member-template-function-and-functors-that-instantiate I put split the definition and implementation of the two Functors across Foo.h and Foo.cpp as would be done with an ordinary class..
Is a C++ is_lambda trait, purely implemented as a library, impossible? http://stackoverflow.com/questions/4661875/is-a-c-is-lambda-trait-purely-implemented-as-a-library-impossible expressions from function and member function types. Functors are another matter. The problem I see here is the definition..
What are the benefits of using Boost.Phoenix? http://stackoverflow.com/questions/5013476/what-are-the-benefits-of-using-boost-phoenix of everything else in this library The documentation says Functors everywhere . I don't understand what is the good of it c boost..
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