Jeffry Nox wrote:
> struct A {
> uint id=0;
> char[] name;
> }
>
> struct B {
> uint id=0;
> char[] title;
> }
>
> void lookup(T)(T[] s, ***)
> {
> char[] txt = s[0].***;
> }
>
> as illustrated above, how can i get struct object property info as in *** so
> i can manipulate it inside the function lookup above? in function lookup, i
> didnt know what is the variable name for the char[], so *** pass in the 2nd
> parameter, question is how to pass that member info or pointer so that it
> works on different struct declarations?
At runtime? You can't, really. The only thing you could do is
something like this:
void lookup(T)(T[] s, size_t offset)
{
char[] text = *cast(char[]*)(cast(void*)(&s[0]) + offset);
}
(Note: haven't tested that particular combination of casts; I don't
bother memorising this :P)
Or something to that effect. If possible, it'd be safer to do this:
void lookup(T, char[] field)(T[] s)
{
char[] text = mixin(`s[0].`~field);
}
-- Daniel
