I feel like this should be simple but I can't seem to figure it
out. How do I declare a function to have the same call signature
as another function/callable type?
Like if I have:
alias Sig = int function(int x, int y);
How do I define a function such that it will have the same call
signature as Sig? How do I take into account all the extra stuff
that can go into a function signature like the argument
attributes and the return type attributes etc.?
Another way to phrase this question would be, how do I pass a
function signature into a template and actually define functions
with it?
Related question, if I have Sig, how would I define DeltaSig to
be exactly the same as Sig but with an extra parameter at the
start or end of the parameter list?
Thanks :)
