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this is a pointer to object. To access its member's data, one needs to dereference this first and then to dereference that member if it is a pointer. Pointer-to-member operators are not related to this. Citing cppreference: When a non-static class member is used in any of the contexts where the this keyword is allowed (non-static member function bodies, member initializer lists, default member initializers), the implicit this-> is automatically added before the name, resulting in a member access expression (which, if the member is a virtual member function, results in a virtual function call). — Preceding unsigned comment added by 5.20.191.37 (talk) 21:12, 27 December 2022 (UTC)
Function pointers in C and C++ are both type-safe. How are they any less type-safe than, say delegates in C#? I keep hearing this untrue statement. — Preceding unsigned comment added by 130.76.96.111 (talk) 19:13, 6 September 2013 (UTC)
Perhaps there could be something here showing how the same thing can be achieved using Object Oriented Programming? Ubermonkey 20:35, 2 Apr 2005 (UTC)
Also a nice implementation of this using a class where the method is passed as a function pointer (so a method pointer i guess). I've been trying to find an example of this everywhere and i can't find it. -Sharth --128.175.13.43 17:54, 26 October 2005 (UTC)
It would also be nice if the program actually worked.. say.. if it had a definition for the "list" or "listnode" types. Fresheneesz 07:56, 5 June 2006 (UTC)
public interface Foo { public abstract int perf(int a); } class MyFoo implements Foo { public int perf(int a) { return (2*a + 3); } } public class Test { static Foo s_func; public static void main(String[] args) { int x; setFunc(new MyFoo()); x = callFunc(10); } void setFunc(Foo f) { s_func = f; } int callFunc(int a) { return s_func.perf(a); } }
"Imagine rewriting the above code without function pointers. The fsum() and fproduct() function would both require loops iterating through the linked list." Isn't it contradicting to say that when the code does exactly that--or am I missing something? Guardian653 03:55, 2 December 2006 (UTC)
Procedural parameter seems to have a lot in common with this article. If someone agrees, should these two articles mention each other, or maybe even be merged? --Abdull (talk) 11:58, 26 July 2008 (UTC)
Java's lack of function pointers should be noted/explained. Fig (talk) 14:01, 30 September 2013 (UTC)
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