Deleting a preloaded image from memory

[ivan.leben]

How can I really delete a preloaded image from memory/disk cache? Let's
say I preload an image by creating an Image object and setting its src
attribute to desired URL:

var img = new Image();
img.src = [someurl];

Then I use the image a few more times by adding it into an Array
object:

var images = new Array();
images.push(img );

I found out that just calling 'delete' on a pointer to that Image
object, doesn't free up the RAM.

delete images[0]; //RAM is not freed here!

Should I call delete on all the references to the image object? This
would be a real pain, since I have to check about 3000 lines of code
for possible references to it and make sure I 'delete' all of them...
What about the other new Image objects, that get their src attribute
set to the same url?

[Matt Kruse]

Randy Webb wrote:

I have been plonked and un-plonked by him so many times I call myself
the President of the "Thomas called me a Troll" club.

If you would just read ECMA Specification version 15.43.24.5 section 5,
paragraph 4, you would know why.

Score adjusted

--
Matt Kruse
http://www.JavascriptToolbox.com
http://www.AjaxToolbox.com

[John W. Kennedy]

Lasse Reichstein Nielsen wrote:

"Bart Van der Donck" <ba**@nijlen.co m> writes:

I'm not aware of any system that doesn't store RAM as binary digits,
and I'm not sure if this is überhaupt possible.

It's possible, and there were attempts in the early days of computers
to build decimal based computers. It just turned out to be too fragile.
Distinguishing between ten levels of voltage was more errorprone than
just between "on" and "off".

I believe both the Eniac and the Mark I were decimal.

The ASSC ("Mark I") was electromechanic al, and used odometer-like wheels.

IBM, at least, never made a decimal computer based on voltage
differences. All IBM decimal computers used binary encodings, including:

BCD: 0000 through 1001.
Excess-3: 0011 through 1100
Biquinary: five bits, only one 1, plus two bits, only one 1
Three-of-five: five bits, three 1, and two 0

IBM mainframes still normally use decimal arithmetic for financial
calculations, although binary is used for addressing and scientific
number crunching.

One Russian computer of the 50's used ternary (base-3).

--
John W. Kennedy
"The blind rulers of Logres
Nourished the land on a fallacy of rational virtue."
-- Charles Williams. "Taliessin through Logres: Prelude"

[Thomas 'PointedEars' Lahn]

Bart Van der Donck wrote:

Thomas 'PointedEars' Lahn wrote:

[...]
You do not look very smart ignoring this very simple fact repeatedly,
while rambling and patronizing knowledgeable people about quite
irrelevant possible implementations of data storage in hardware.
Nuff said.

Play the ball, not the person, Thomas.

I am playing the ball. I am criticizing (your) evading behavior in
discussions that can be perceived as trolling, as it tries to keep
off-topic discussions alive by posting irrelevant facts and later
stating them as irrelevant repeatedly, while ignoring the real facts
presented, and not having the potential to provide a noticeable gain
to anyone (learning about what is troll behavior aside).
PointedEars
--
When the power of love overcomes the love
of power, the world will know peace.
-- Jimi Hendrix