Thanks all!
I will take a look at http://tortoisesvn.tigris.org/
At the moment I'm using the tarball "5 Aug 2006 Felix1.1.2 (new)".
Maybe some changes has been made since then, because I can't get parameters
with the fun keyword to compile.
The thing I wanted to investigate was if (fun x:int) equals (x:unit->int) or
(var x:unit->void)?
If the latter is right, why the type int? Seems like Erick and John gave
slightly different answers to Jonathan (see below).
Oh, and a last question.
In the case of eager evaluation, are parameters evaluated from left to right or
is the order irrelevant in Felix?
\Klas
Erick wrote:
> Finally, the fun argument is just sugar for a function call. So this:
>
> proc foo (fun x:int) {
> print x; endl;
> print x; endl;
> }
>
> is sugar for this:
>
> proc foo (x:unit->int) {
> print (x ()); endl;
> print (x ()); endl;
> }
>
> Then it can be used like this:
>
> x := 1;
> foo { x++; return x; };
> print x; endl;
>
> should print out:
>
> 2
> 3
< 3
John wrote:
>if you want to force lazy evaluation you write:
>
> fun cond(c:bool, var thn:unit->void, var els:unit->void) =>
> if c then thn() else els() endif
> }
>
> and call it like:
>
> cond (true, {x/y}, {x/0} )
>
> That divide by zero won't happen, because you're passing
> a closure which is not executed: lazy evaluation.
>
> There is a shorthand for lazy evaluation:
>
> fun cond(c:bool, fun thn:int, fun els:int):int =>
> if c then thn else els endif
> ;
>
> it means precisely the same as the previously given
> long version.
>
> From: Erick Tryzelaar <[EMAIL PROTECTED]>
> Date: 2006/09/29 fr PM 06:45:02 CEST
> To: Klas I <[EMAIL PROTECTED]>
> CC: [EMAIL PROTECTED],
> [email protected]
> Ämne: Re: [Felix-language] (no subject)
>
> Klas I wrote:
> > Hi!
> >
> > Is there a tarball of the latest version?
> > I just found http://www.wincvs.org/ ,but I haven't figured it out yet.
> >
> > Cheers
> > Klas
>
> Good Morning,
>
> We haven't released the latest version yet, but if you're interested in
> tracking our most recent developments, you'll have to use subversion. If
> you get a command line felix, this should work:
>
> svn co http://svn.sourceforge.net:/svnroot/felix/felix/trunk felix
>
> It seems you're on windows. If so, I'd recommend using tortoisesvn:
>
> http://tortoisesvn.tigris.org/
>
> I haven't used it for a couple years though, so I don't remember exactly how
> to do it. The documentation should point you to how to grab data from that
> http link from above.
>
> Other options are listed here:
>
> http://subversion.tigris.org/links.html
>
> Mind you that the latest version does tend to change often, and break as well
> :) If you have any problems, just send another mail to felix-language and
> we'll help you out.
>
> -e
>
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