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Hi,Found this in a new JavaScript book (Douglas Crockford's 'JavaScript the Good Parts' [O'Reilly]) converted it to AS3 and wanted to share, this little object blows my mind, read it over and I'll explain below.
var myObject:Object = function() : Object {
var value = 0;
return {
increment: function (inc:Number = 1) {
value += inc;
},
getValue: function() {
return value;
}
}
}();
myObject.increment();
trace(myObject.getValue()); // traces: 1
myObject.increment();
trace(myObject.getValue()); // traces: 2
There's a few odd things here, we are able to persist the value of a variable from inside of an object and run calculations on it. This is the same thing as creating a class and then defining a class level variable inside of it. We are then defining functions inside of this returned object that can use these persistent variables.
Other odd things, notice the last line of the myObject definition. We are executing the function right away, personally I never seen this before but opens my mind a little further into the way that objects interact and what calling a function really means.
This all runs in AS3 but if you go into this to deeply I personally wouldn't want to step in and work on that code. I think this is more interesting to show how objects can interact and what is happening and how things can be passed around.
Thanks to J-C for sending this over to me. If you don't fully understand it's cool but we should cover some of this at a fcny meeting some day. There are other ideas in that book that will blow your mind even further but I'll spare you for now, this one just has stuck in my mind and I wanted to share.
Tyler, Ideas and cool stuff, Jun 2008Note: The final appearance of your post may be different, depending upon your blog’s style sheets.