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Re: another take on hackers and painters
On Tuesday, May 20, 2003, at 08:21 PM, Anton van Straaten wrote:
> Without reflection or something to replace it, you can't achieve the
Sure you can. Just have your "new and improved" compiler retain the
> For example, take C: no matter how fancy an interpreter you embed
> in a C program, it's not going to be able to do anything with C
> structs for
> which it doesn't have source code or other meta-information.
Right, but what's to keep us from using our interpreter on the whole
> Java's reflection allows it to achieve essentially the same end result
> you can in a language with eval, including being able to evaluate
> statements in the language which are able to access structures in the
> program that calls eval.
I don't understand what you mean here. Lots of strongly typed languages
> The "cheating" part is that someone has to implement a parser and other
> evaluation machinery in order to achieve this. But it can and has been
> done, which you can't say of every language.
The only problem I see with doing it in any language is the restriction
that it work with precompiled code. I agree that reflection is required
to make that bit possible. But that's not a terribly interesting bit to
people used to languages which don't require precompilation.
Io, a small language: http://www.iolanguage.com/