Re: Very strange problem with Class object

On Mar 31, 2:22 am, Piotr K <piotr.korzeniew...@xxxxxxxxx> wrote:
I simply ran out of ideas why this piece of code works so strange,
it's a very simple class creating object:

var Class = function(tpl) {
return function() {
for(var t in tpl) this[t] = tpl[t];
};

}

var X = new Class({
arr: []

});

var x = new X;
x.arr.push(5);

var y = new X;
alert(y.arr[0]) // displays 5

How, I mean HOW in the world it displays 5? I tested it with normal
string and number variables - works fine, but I can't figure what's
wrong with the arrays? I tried to change the Class function in many
ways like making "new Object(tpl[t])" or "tpl[t].valueOf()" but
nothing helped.. I'm frustrated, it's so freakin strange..

Because you have created a very efficient memory leak over closure
with tpl value retained in it. I honestly have no idea what does this
code suppose to mean. Is it some work-on-denial test for a script
engine? There are more sophisticated professional packages for that,
Acid 3 from the first coming into my mind.
.

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