Using arrays of function pointers in D

[Adam D. Ruppe via Digitalmars-d-learn]

Start with a function type declaration:

void function() func_ptr;

Then make an array out of it:

void function()[] func_ptr_array;


It works like other arrays, just the [] might be a little harder 
to see since it is a much longer type signature. But it is still 
in there, right after it, similarly to int[].

Then the array is indexed and set like normal. You can change 
length on it (auto initializes all members to null), ~= &my_func 
to append, etc.

You can also do associative arrays of function pointers btw.