FLASH® LITE™ 2.x - Adobe Help and Support

Usage 2: The following example deletes a property of an object:
// create the new object "account"
var account:Object = new Object();
// assign property name to the account
account.name = "Jon";
// delete the property
delete account.name;
Usage 3: The following example deletes an object property:
var my_array:Array = new Array();
my_array[0] = "abc"; // my_array.length == 1
my_array[1] = "def"; // my_array.length == 2
my_array[2] = "ghi"; // my_array.length == 3
// my_array[2] is deleted, but Array.length is not changed
delete my_array[2];
trace(my_array.length); // output: 3
trace(my_array); // output: abc,def,undefined
Usage 4: The following example shows the behavior of delete on object references:
var ref1:Object = new Object();
ref1.name = "Jody";
// copy the reference variable into a new variable
// and delete ref1
ref2 = ref1;
delete ref1;
trace("ref1.name "+ref1.name); //output: ref1.name undefined
trace("ref2.name "+ref2.name); //output: ref2.name Jody
If ref1 had not been copied into ref2, the object would have been deleted when ref1 was
deleted because there would be no references to it. If you delete ref2, there are no references
to the object; it will be destroyed, and the memory it used becomes available.
See also
set variable statement
do..while statement
do { statement(s) } while (condition)
Similar to a while loop, except that the statements are executed once before the initial
evaluation of the condition. Subsequently, the statements are executed only if the condition
evaluates to true.
A do..while loop ensures that the code inside the loop executes at least once. Although this
can also be done with a while loop by placing a copy of the statements to be executed before
the while loop begins, many programmers believe that do..while loops are easier to read.
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