function-pointers

Is there a way to pass a call back function in a Java method? The behavior I'm trying to mimic is a .Net Delegate being passed to a function. I've seen people suggesting creating a separate object but that seems overkill, however I am aware that sometimes overkill is the only way to do things. If you mean somthing like .NET anonymous delegate, I think Java's anonymous class can be used as well. public class Main { public interface Visitor{ int doJob(int a, int b); } public static void main(String[] args) { Visitor adder = new Visitor(){ public int doJob(int a, int b) { return a + b; } };

It's interesting that using the function name as a function pointer is equivalent to applying the address-of operator to the function name ! Here's the example. typedef bool (*FunType)(int); bool f(int); int main() { FunType a = f; FunType b = &a; // Sure, here's an error. FunType c = &f; // This is not an error, though. // It's equivalent to the statement without "&". // So we have c equals a. return 0; } Using the name is something we already know in array. But you can't write something like int a[2]; int * b = &a; // Error! It seems not consistent with other parts of the language. What's

I have a function name stored in a variable like this: myvar = 'mypackage.mymodule.myfunction' and I now want to call myfunction like this myvar(parameter1, parameter2) What's the easiest way to achieve this? funcdict = { 'mypackage.mymodule.myfunction': mypackage.mymodule.myfunction, .... } funcdict[myvar](parameter1, parameter2) It's much nicer to be able to just store the function itself, since they're first-class objects in python. import mypackage myfunc = mypackage.mymodule.myfunction myfunc(parameter1, parameter2) But, if you have to import the package dynamically, then you can achieve