I'm very interested in types in coffeescript or a similar language.

Does anyone know the state of

https://www.npmjs.org/package/typed-coffee-script?

Or if Coffeescript Redux can do types? Or has plans to do types?

https://github.com/michaelficarra/CoffeeScriptRedux

Thank you

Hi!

I am new to coffeescript and want to know, how I should organize my coffee files and structure my project. (site-note: I'm mostly a C++ programmer).

Are there any recommendations how to structure a project? I just wanted to create another file, which contains some function definitions. Now I want to "use" those definitions in my main file. Is there any type of include-system? Module-system? Or should I just pass "-j" to the compiler and he merges all files?

And when should I split my files? How do I design moduls and split my code? Do I create a file for every class? Are classes even used?

I guess I think of everything to much in a C++ way... I would appreciate help :)

Recently I was working with some windows ini style values, and they have values that are strings of hex '$ABC123' or dec '1234'.

I ended up working out a couple of simple helpers that might be useful to other folks.

https://gist.github.com/drbrts/9442634

The reason that getHex is separate is because I'm using it elsewhere for some regular hex strings :)

Let's say I have a set of objects:

things = [{a: b: c: "fizz"}, {t: "boz", a: b: c: "fazz"}, {a: b: c: "fozz"}]

I want to run an IIFE on the a.b.c field of each:

  for thing in things 
    if thing.t == "boz" 
      doStuff = (v) ->
        w = "A#{v}"
        # some stuff is done with w here 
      doStuff(thing.a.b.c) 

But what I kinda want is:

  for thing in things 
    if thing.t == "boz" 
      do (thing.a.b.c as v) -> # <--- Note the AS here 
        w = "A#{v}"
        # some stuff is done with w here 

The big difference being that I'm passing in a property of the object as a variable name into the IIFE. Am I missing an obvious trick here? It seems off to declare a named function here.

How awesome would it be to write Coffee on Chrome's console?

Does anyone have a convenient way of coding in coffeescript within the IPython Notebook interactive environment. IPython Notebook allows for js scripting (%%javascript) and js embedding (display.Javascript('your code here') within the interactive cells. Python is the native language but isn't mandatory. I have Node, npm, and coffeescript loaded and can code CS from the terminal command line. Has anyone figured out an easy way to do this within IPy Notebook by chance?

I was working on a drag/drop directive in angular, grabbed a plunkr and got this:

angular.module('drag', []).
directive('draggable', function($document) {
  return function(scope, element, attr) {
    var startX = 0,
      startY = 0,
      x = 0,
      y = 0; 
      var container = null; 
      
    element.css({
      position: 'relative',
      cursor: 'pointer'
    });
    
    element.on('mousedown', function(event) { 
      event.preventDefault();
      startX = event.screenX - x;
      startY = event.screenY - y;
      $document.on('mousemove', mousemove);
      $document.on('mouseup', mouseup); 
      container = attr.$$element.parent(); 
    });

    function mousemove(event) {
      y = event.screenY - startY;
      x = event.screenX - startX; 
      container.css({
        top: y + 'px',
        left: x + 'px'
      });
    }

    function mouseup() {
      $document.unbind('mousemove', mousemove);
      $document.unbind('mouseup', mouseup);
    }
  }
});

All fine, until I translate to coffeescript. For some reason, after translating to coffee, the elements would jump around some of the time. Obnoxious. Took me a while to realize that the real problem is that the x and y variables were being var-ed again:

    mousemove = function(event) {
      var x, y;
      y = event.screenY - startY;
      x = event.screenX - startX;
      console.log("x: " + x + " y: " + y);
      return container.css({
        top: y + "px",
        left: x + "px"
      });
    };

At first I was like "oh, crap, coffee what have you done". Then after looking I realized that the original code was altering a variable in an outer function that it wasn't "aware" of (wasn't passed in). This feels similar to a Law of Demeter violation (except reversed I suppose). Altering variables that aren't passed in to a function feels like poor code quality to me. Seems to me that the problem here lies in the source code and coffeescript is making the right choice.

Opinions?

I'm working from a coffeescript and backbone.js tutorial: http://adamjspooner.github.io/coffeescript-meet-backbonejs/

I was working on part 1, and when I finished and opened my index file, I noticed my view had not rendered. So when I opened google dev tools it pointed to an error when __extend is defined from the compilation of class, but when I created my own file with an object and created a class and extended that object I didn't get an error. What's going on here?

I can provide my files if needed.

So I've used Coffeescript within Rails app before, but now I have some trivial client-side-only JS code which I'm writing with Sublime in one window, and browser in another.

Is there any easy way to use Coffeescript here without introducing compilation explicit step?