Moved (again)

jeffober@gmail.com — 2008-01-31T08:06:10-05:00

This website has moved to ArtfulCode.net.

On hiatus

jeffober@gmail.com — 2008-01-14T13:45:27-05:00

With the birth of my daughter, I have not had much chance to keep up with Artful Code. I apologize to those who read regularly, and I will begin posting new articles as soon as possible.

Partial Application and Currying

jeffober@gmail.com — 2007-12-04T12:33:03-05:00

Currying, known in Python land as partial application, is a technique in which a function taking multiple arguments composes a function that takes fewer arguments (in most languages, reducing to one, although this is not the case in Python) by partially applying it to given parameters. ...I found a nice little currying function for Javascript here (edit: it was pointed out in a reader's comment (here and at dzone) that this version of curry does not work on previously curried functions; below it is a modified version which will function as expected):

function curry(fn, scope) { var scope = scope || window; var args = []; for (var i=2, len = arguments.length; i < len; ++i) { args.push(arguments[i]); }; return function() { /* one big problem here is that the following statement is not returning the applied function....  function curry(fn, scope) { var scope = scope || window; var args = []; for (var i = 2; i < arguments.length; i++) { args.push(arguments[i]); } return function() { // this takes care of the arguments problem var fn_args = []; for (var i = 0; i < args.length; i++) { fn_args.push(args[i]); } for (var i = 0; i < arguments.length; i++) { fn_args.push(arguments[i]); } // this takes care of the null return problem return fn.apply(scope, fn_args); }; }

...

Artful code

Moved (again)

On hiatus

Partial Application and Currying