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Topic: enlarging an array (Read 551 times) |
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benelek
 
 
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enlarging an array
« on: Jan 5th, 2003, 3:13am » |
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hello,
is there a way to add more objects onto an array, once created? i've tried the ol' javascript method of
theArray[theArray.length]=newNumber;
without success.
the reason i ask is that i would like to create a global array of objects at the beginning of the program (ie, before loop()), and then tag extra things on the end of the array at any time.
is there an example i haven't seen, in which objects are created dynamically upon user-events (with or without an array)?
thanks,
-jacob
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fry
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Re: enlarging an array
« Reply #1 on: Jan 5th, 2003, 4:12am » |
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two answers.. first is that you can use the java class "Vector" which is a growable array.
personally, i find that too slow, so i use a bit of code like:
Code:// grow an array for a list of strings
String list[];
int listCount;
void addToList(String what) {
// if the array is full..
if (listCount == list.length) {
// double the size of the array
String temp[] = new String[listCount*2];
System.arraycopy(list, 0, temp, 0, listCount);
list = temp;
}
// add the element to the list
list[listCount++} = what;} |
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this will work for any sort of object or type.
it's also something i'd like to have as a feature of p5, since i'm tired of typing that bit of code for my own stuff.
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| « Last Edit: Jan 5th, 2003, 4:13am by fry » |
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