could always use delete i guess, but i tend to reinit them too
On Nov 20, 2005, at 7:05 PM, JesterXL wrote:
Better yet, why not just:
myArray = [];
done?
----- Original Message -----
From: "Mark Winterhalder" <[EMAIL PROTECTED]>
To: "Flashcoders mailing list" <[email protected]>
Sent: Sunday, November 20, 2005 6:49 PM
Subject: Re: [Flashcoders] Array Madness - test yourself
Can you
spot the error?
yes :)
why not simply do something like that:
while( myArray.length ) myArray.pop();
?
mark
On 11/21/05, Judah Frangipane <[EMAIL PROTECTED]> wrote:
I just want to bring to your attention a rare array problem that
eluded
me for years. I just realized what is going on.
Whenever I tried to clear an array I would use a for loop, iterate
through all the items and pop each one off. Every once in a while the
arrays would still contain values and not be completely erased.
Can you
spot the error? Here is the code:
*****************************************
wrong way
*****************************************
// create an array
errors = new Array()
// add two items
errors.push("item 1")
errors.push("item 2")
// loop through each item
for (var i=0;i < errors.length; i++) {
trace("removing item")
errors.pop()
}
// errors.length = 1
trace("errors.length="+errors.length)
*****************************************
right way
*****************************************
// create an array
errors = new Array()
// add two items
errors.push("item 1")
errors.push("item 2")
var len = errors.length;
// loop through each item
for (var i=0;i < len; i++) {
trace("removing item")
errors.pop()
}
// errors.length = 0
trace("errors.length="+errors.length)
Look at the condition (i < errors.length).
If we pop an item off the end of the array then the length of the
array
is decreased and we do not iterate through all items in the array.
Hope
this helps someone.
Best Regards,
Judah
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