On Wednesday, 12 June 2013 at 10:59:42 UTC, Szymon Gatner wrote:
I know how to iterate over members when type is known at
compile time (with __traits) but I can't find a documentation
of how to get them polymorphically, I mean:
It hasn't been implemented in the runtime yet (though all the
pieces are there), so unless each class makes the info available
itself (or you want to modify your runtime) you can't.
For example:
claas Foo {
int x, y;
mixin ReflectionInfo!Foo;
}
Where ReflectionInfo is something you'd write. Jacob Carlborg has
written a serialization library that works like this:
https://github.com/jacob-carlborg/orange
But even so it wouldn't work through Object or classinfo unless
you modify druntime. I'd like to see some functionality for this
in for the next release (or maybe the one after it) though.
Also: Is there any article / tutorial on D's introspection
capabilities. I heard it is pretty powerful and I would really
like to try it.
I don't think so. The basic idea though is:
foreach(member; __traits(allMembers, SomeClass)) {
// member is a string, the name of the member
// get the thing like this:
__traits(getMember, SomeClass, member)
}
Then you look into it with the other traits and use std.traits
from the stdlib for helper functions.
