obj-c dictionary to url parameter string

obj-c dictionary to url parameter string

Are there any built in methods (or really simple examples, not using
libraries) that can turn a dictionary into a url parameter string (to be
appended to url). I'm expecting something similar to the psuedo below:
objectSerialization(obj){
var ret = "";
for(key in obj){
if(dict[key] is "array"){
ret = objectSerialization(dict[key]);
}else{
ret += key + "=" + dict[key];
}
ret += "&";
}
return ret;
}
Obviously there may be glaring bugs in this example, but the idea is
there. I suppose I could just port this example into obj-c code, but my
question is if there is a more acceptable way of doing this. The main
purpose of this is to build GET request urls with dynamic url parameters,
originally contained in dictionaries. Thanks for any help.