more_functional

[major-lab]

Hello @DrBoolean, thanks for your great collection of functional techniques for JS! I already used several functions from it, but today I tried to load the whole thing and got

Error: Cannot find module './more_functional'

Am I missing some file, do I have to rename something, or is this dependency not necessary?

[DrBoolean]

Hi major-lab.

That's great to hear you're playing with it!

That's an artifact. I apologize, this sways from being ready to use and totally in dev.

more_function is what we called the Prelude library beforehand. So if you remove that dependency and require prelude.js instead, all should be well.

Hope that helps!

[major-lab]

Hi, thanks for your help, that worked indeed, but I got a new error. I try to do pattern matching, and am missing the function groups_of apparently:

        throw e; // process.nextTick error, or 'error' event on first tick
              ^
ReferenceError: groups_of is not defined

Do you have this somewhere?

[DrBoolean]

Haha man, we gotta clean this up groups_of should be groupsOf

[major-lab]

Ok, here we go :smiley: Now i am missing $:

        throw e; // process.nextTick error, or 'error' event on first tick
              ^
ReferenceError: $ is not defined

[DrBoolean]

Is that for pattern matching?

I haven't used that in a bit...

I think we're mainly supporting these now:

https://github.com/loop-recur/FunctionalJS https://github.com/loop-recur/PreludeJS https://github.com/loop-recur/typeclasses

Which should get ya most of the haskell goodness. I think the pattern matching library ended up being less useful than we though so we dropped it.

[major-lab]

Oh, how unfortunate.. i was just trying out pattern matching. Anyways, thanks for the library, it is great so far!

[DrBoolean]

No prob.

To answer your previous question, btw I think you can do something lik this:

var $ = Match.parameter; var _ = Match.wildcard;

Color = Data(function(){ return ({ Red: {}, Green: {}, Blue: {}, Yellow: {} })}); Point = Data(function(){ return ({ Pt: { x: Number, y: Number, color: Color } })});

var points = Match (

Red, function() { return "Was Red"; },

Pt(1,$, _), function(n) { return "Was"+n; },

Green, function() { return "Was green"; },

$, function() { return "nah"; } );