What does array size mean?

[cr4ck4r]

I have got a question.
I somehow got self confused ..<.<


example
integer [array]

if i set a array in GUI, what means the "SIZE" of the array, what if it is set to 1, what if it set to 500 or even 8191?
i dont understand the "size"..

if it is =1

i still can integer [>1]

integer [1]
integer [232]
integer [4353]

...
explains to me ..please

 

[Pharaoh_]

Each array is actually a channel that generates a unique identity for the entity you set into the variable. An array can maximum store 8191 data into that specific variable.
So, if Integer[1] = 10 and Integer[2] = 15, Integer[1] != Integer[2].
Additionally, Unit[1] = (Last created unit) and Unit[2] = (Triggering unit) are not the same; they share the same variable but each array slot represents a different value.

 

[Garfield1337]

Pharaoh_, you didn't understand what he asked - he meant the size in variable editor.
Well, as far as i know, the size represents the number to which the array members are initialized. If the size is, for example, 5, the variables with indexes from 0 to 5 will be initialized.
In GUI, this doesn't really matter so just keep it at 1.

 

[Pharaoh_]

Yes, I was just going to edit it. A useful explanation is this:

In global arrays, what does the "size" mean?
The size is how many layers the array has. The total number of data items able to be stored in a global array is "size+1". This is due to layer 0 counting as a valid storage location. If you want to store 1 data item per player for 12 players in a single global variable, then an array size of 11 is needed.

from http://www.hiveworkshop.com/forums/trigger-gui-editor-tutorials-279/array-tutorial-17789/, kinda what Garfield1337 said.

 

[Chewii]

How come if i make and variable with size 1, And then uses it for my unit, Unit[1] but it will also work if i make another Unit and name it to Unit[2]

 

[Garfield1337]

@Pharaoh_
That quote isn't really true because it defies what the OP said.
The size is a number to which all array members with indexes from 0 to size are given 'initial value' (found in variable editor).
You can use any variable with index from 0 to 8190 except that all variables with index above the size will have null value.

 

[WaterKnight]

The tutorial suggests that when you set size to 1, you could not use index 10 for example, which is wrong. Like Garfield1337 said, the array is initialized from 0 to size with the preset value. But it matters in GUI because it is a GUI functionality and in Jass you can write it yourself. Where it would make a difference in GUI, is, you cannot create certain objects there like timers, they can only be created as a preset in a variable. So setting the size would equip the array with valid timers, allowing you to use them.

 

[Dr Super Good]

JASS arrays are dynamic arrays with a maximum size of 2^13. In GUI, the size field is used to initialize every index to a value (as some types need an object to work). Be aware that the array initialization that GUI uses can cause the op limit to be reached and thus a thread crash (breaking all triggers after that point).