On 7/26/12 7:44 AM, bearophile wrote:
Wes:
Can you do this in D? If not then what other language?
Maybe CommonLisp and Scheme (and maybe Clojure) are able to do what you
ask for (but normally they don't have the stringification with $).
1. Can you get a list of all classes and variables in the current
scope e.g. __traits()?
I think it's a missing feature. But what are the use cases? In Python
it's easy to do, but it's not a common need.
What happened to __traits(allMembers, module_name)? It doesn't list the
contents of the current scope, but instead that of a module (including
the current one).
2. Can you statically iterate over every field of a class?
It seems like the only returns are string lists from __traits().
I basically am interested in being able to generate a
PrettyPrint/Serializable/Hash template without passing in every
single field.
With their names and mixin() then maybe you able to do what you look for.
3. Is there any way of executing code or programs during compile
time?
Only CTFE.
The OP is likely new to the community, so throwing acronyms around may
not be helpful.
CTFE stands for Compile-Time Function Evaluation. In short you get to
evaluate a subset of D during compilation if you force a function call
in a static evaluation context, such as initializing an enum or a static.
Andrei
