And on the install page : maybe http://ycombinator.com/arc/arc2.tar should be a link, not simply a text you have to copy/paste in your favorite URL bar... Come on, Paul... hyperlinks... Even in web 1.0, they already existed :)
On the Arc level, it works perfectly well for me (no error, no segfault). But, when I try to (manually, with vi) open the db file (the "test" file), it's empty. Existing, but empty. I don't know why yet.
There's one thing that seems strange to me in the above declaration : char errmsg should not be declared as a cstring : it is a pointer to a string. I guess it should be declared as a cptr. I'll investigate more deeply later, when I'll find enough time...
No hash table working yet but I've started to write a wiki documentation for arc2c on GitHub : http://github.com/sacado/arc2c/wikis/home. Feel free to add things or correct mistakes...
Everything returns a value in arc, at least nil, or any other value. When you evaluate something through the REPL, the result is displayed. When you call 'pr, all the args are displayed, then the first arg is returned (then, displayed by the REPL).
If you type, say
(for i 1 10 (pr 1 2 3 4 5))
You will not see the 1 repeated on each iteration. It will print nil, though : that's the value returned by 'for.
"on the dollar prompt i wroote (help map and forgot the last parenthesis i now have > prompt insetad. but it cant interpret lisp. how do i get back to $?"
Not sure if you're still reading this thread or not, but I thought I would try to clear up some of the questions you have here for you.
> so now im running anarki in dr scheme right?
Well, not exactly. MzScheme is the name of the Scheme programming language implementation that you are running anarki in, DrScheme is basically a nice GUI front end to the MzScheme language.
> what was this GIT stuff i downloaded? i thought it was some sort of IDE?
No, Git is not an IDE. It is software that is used to manage source code. In other words, using Git, you get a history of changes made to your source code allowing you to rollback changes and create new branches where you can develop new features without fear of breaking the currently working build of your software. The reason you downloaded it is because it is the source control software that the Anarki developers are using to manage the Anarki source code, so you need it to get a copy (i.e., a clone) of the current working version of Anarki.
> what do you use to edit/compile? is there something better than DrSceheme?
Everyone uses MzScheme to compile and execute Arc code, because that is the language that Arc was written in. There are other implementations of Arc on the JVM (aka Java Virtual Machine) and another that compiles to C, and I believe one in Common Lisp, but none of these are official implementations of Arc (i.e., created by Paul Graham). As for editing Arc code, well you can use whatever you want to edit it. Personally I'm an Emacs fan, so I use it for all of my editing, but I'm sure Vim, TextMate, etc., etc. would do just as well. If you are looking for an editor in which you can also execute your code, then Emacs or DrScheme should work.
I hope that clears up a few of your questions for you, good luck in your studies.
Const lists (created with quote) are improper scheme list, i.e. they end with nil instead of the emtpy list (in scheme nil != '()), whereas lists created with (list ...) are proper lists (ending with '()). This is certainly a bug.
I don't like it. What does (tb x) mean ? Does it mean "look for the key 'x in table 'tb" (provided 'tb is a table) or "is variable 'x holding the same thing as variable 'tb" ?
However, I think this could be a good candidate for ssyntax :
2) is an interesting idea, but would it really be useful ? The only real use I can think of is your example with multiple cdrs, but then wouldn't it be better to add the cdr functions up to 4 ds, then use the composition syntax in the rare cases you would need more ?
