What is the fundamental difference between the two arrays when dealt with the functions pointer2array() and duplicateArray()
1: var original_arr:Array = new Array()
2: var some_arr:Array = new Array("one","two","three")
3:
4: function pointer2array(){
5: original_arr = some_arr
6: }
7: function duplicateArray(){
8: for(var k:Number=0;k
9: original_arr.push(some_arr[k]);
10: }
11: }
first using the duplicateArray()
1: trace(original_arr.toString() + newline);
2: duplicateArray();
3: some_arr.push("four")
4: trace("some_arr="+ some_arr.toString() + newline)
5: trace("original_arr="+original_arr.toString() + newline)
Now Publish the flash swf to have the below result
result:
one,two,three
some_arr=one,two,three,four
original_arr=one,two,three
Now try using the pointer2array()
1: trace(original_arr.toString() + newline);
2: pointer2array();
3: some_arr.push("four")
4: trace("some_arr="+ some_arr.toString() + newline)
5: trace("original_arr="+original_arr.toString() + newline)
After you publish the flash swf you will be shocked to see the result
result:
one,two,three
some_arr=one,two,three,four
original_arr=one,two,three,four
The difference is that original_arr is a reference to some_arr, so be careful.
Well I am not a hard core programmer, I have been programming for days and some times you tend to forget the concepts. Just a reminder
The above code holds good for JavaScript too.
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