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Re: how small is lightweight?
On Wednesday, April 9, 2003, at 03:58 PM, Anton van Straaten wrote:
> The LL1 CFP (http://ll1.ai.mit.edu/cfp.html) said:
> The term "lightweight" refers not to actual functionality,
> but to the idea that these languages are easy to acquire,
> learn, and use.
I see. That's different from how the term seems to normally be used.
> By the LL1 definition, most of the languages on your list are
> although one could argue about Java (the language, not the VM); and I
> quibble about Perl, which really has a surprising amount of stuff to
> & learn, not all easy.
Perhaps a comparison of the length of the BNF syntax description would
be more suitable to a user-friendly measure?
Then again, syntaxes that are easier for computers to parser aren't
necessarily easier for most humans to understand.
> If you're focusing on VMs, then the LL1 sense of lightweight becomes
> meaningless, for VMs that can host more than one language. The Java VM
> hosts plenty of lightweight languages, for example, even if you don't
> the Java language as one of them.
Yes, as any Turing complete language could host any other.
> I think it's been observed here before that we shouldn't be surprised
> to see
> lightweight languages being heavy in terms of resource consumption,
> making a language easy for the human isn't necessarily "easy" for the
> computer. Perhaps the Tcl VM size proves that... :)
Maybe the conference should be renamed "user friendly languages" UFL?
Io, a small language: http://www.iolanguage.com/