Web dev

I've come back from Aberdeen with a lovely newsecond hand Guitar! which I love waaaay too much.

Anyway, that whole thing rather distracted me from my business plans here, wasting ovar nine thousand man-hours.

Back to coding though, today: and you know I don't like to make a half-assed job of things (unless I'm hacking in the pub!)

So I wanted to share this little javascript function of which I'm slightly proud, mostly because I implement half the function haskell list library within it.

// From a list of lists of two elements
// Create application/x-www-form-urlencoded parameters
function params(ps)
{
  if (ps == undefined)
  {
     return "";
  }
  else
  {
     var map = function(l,f)
     {
        var a = [];
        var i;
        for(i=0; i<l.length; i++)
        {
           a[i] = f(l[i]);
        }
        return a;
     };
     var fold = function(l,s,f)
     {
        var i;
        for(i=0; i<l.length; i++)
        {
           var s = f(s, l[i]);
        }
        return s;
     }
     var intersperse = function(i,l)
     {
        var f = function(li,e)
        {
           li.push(i);
           li.push(e);
           return li;
        }
        var l = fold(l,[],f);
        l.splice(0,1);
        return l;
     }
     var join = function(ll)
     {
        return fold(ll,[],function(o,l)
        {
           return fold(l,o,function(oo,e)
           {
              oo.push(e);
              return oo;
           });
        });
     }
     // Pair the inputs
     var ps_pairs = map(ps,function(p)
     {
        return p[0] + "=" + p[1]
     });
     var amps = intersperse("&",ps_pairs);
     // join them together
     var joined = join(amps).join("");
     return joined;
  }
}

Excessive?! No!!! But really what I need to do is to remove the inner functions into an array processing library of their own... I think I might make a couple of medium sizish javascript libraries for various things...