setting array values

[python44]

Ok, I am a noob here but I have tried this alot of ways and can't get it to work.

I would like to set array values by passing an array. Like in C++ (iirc) you can write

Global Myarray[2][2]

Myarray = {{1,2},{3,4}}

and in autoit

Global $Myarray[2][2] = [[1,2],[3,4]]

but when I try setting the variable after declaration

$Myarray = {{1,2},{3,4}} or $Myarray = [[1,2],[3,4]] or

$Myarray = $Prevdeclarearray

I get errors compiling

Can you pass an array into an array in this way without re-declaring the array? Sorry it is so noobish but I did try to get the answer myself (fail) and thanks for the help.

[PsaltyDS]

This copies the entire array:

$avDestination = $avSource

If you want to copy a subset of the elements, it has to be done one element at a time with a For/Next loop or something similar.

[python44]

Ok thanks for the help.

But here is what happens when i try this:

Global $pw1[2] = [1,0]

;at this point everything is OK - $pw1 = [1,0]

$pw1 = [0,1]

Now i get an error like this:

C:\Program Files (x86)\AutoIt3\SciTE\myscript.au3(15,8) : ERROR: syntax error

$pw1 = [

~~~~~~~^

I get similar erorw when trying to write an array with an array

$destination = $source

so what noob thing am i doing wrong????

[python44]

Ok thanks for the help.

But here is what happens when i try this:

Global $pw1[2] = [1,0]

;at this point everything is OK - $pw1 = [1,0]

$pw1 = [0,1]

Now i get an error like this:

C:\Program Files (x86)\AutoIt3\SciTE\myscript.au3(15,8) : ERROR: syntax error

$pw1 = [

~~~~~~~^

I get similar erorw when trying to write an array with an array

$destination = $source

so what noob thing am i doing wrong????

Ok, I got the $arraydest = $arraysource working

But I assume there is no way to do something like this without redeclaring an array

$myarray[2][2] = [[1,2],[3,4]]

???

Thanks again for all the help

[PsaltyDS]

Ok, I got the $arraydest = $arraysource working

But I assume there is no way to do something like this without redeclaring an array

$myarray[2][2] = [[1,2],[3,4]]

Well, no, you can't re-declare (REDIM) with initialization values. And while you could just do DIM/GLOBAL/LOCAL again, that breaks down if used with functions as ByRef.

But who cares? Nothing prevents you from declaring a temp and copying it in at any time:

#Include <Array.au3>

Global $aData[2][2] = [["a", "b"], ["c", "d"]]
_ArrayDisplay($aData, "$aData")

_ODD($aData)
_ArrayDisplay($aData, "$aData")

_EVEN($aData)
_ArrayDisplay($aData, "$aData")


Func _ODD(ByRef $avArray)
    Local $avTemp[2][2] = [[1, 3],[5, 7]]
    $avArray = $avTemp
EndFunc

Func _EVEN(ByRef $avArray)
    Local $avTemp[2][2] = [[2, 4],[6, 8]]
    $avArray = $avTemp
EndFunc

Edited July 30, 2010 by PsaltyDS

[python44]

Well, no, you can't re-declare (REDIM) with initialization values. And while you could just do DIM/GLOBAL/LOCAL again, that breaks down if used with functions as ByRef.

But who cares? Nothing prevents you from declaring a temp and copying it in at any time:

#Include <Array.au3>

Global $aData[2][2] = [["a", "b"], ["c", "d"]]
_ArrayDisplay($aData, "$aData")

_ODD($aData)
_ArrayDisplay($aData, "$aData")

_EVEN($aData)
_ArrayDisplay($aData, "$aData")


Func _ODD(ByRef $avArray)
    Local $avTemp[2][2] = [[1, 3],[5, 7]]
    $avArray = $avTemp
EndFunc

Func _EVEN(ByRef $avArray)
    Local $avTemp[2][2] = [[2, 4],[6, 8]]
    $avArray = $avTemp
EndFunc

Thanks alot that really helped

One final question along the same lines

I have had problems using arrays in if statements

global $state[2]=[0,0]

if $state = [0,0] then

But it wont work this way I have to use

if $state[0] and $state[1] = 0 then

am I doing this right?

[PsaltyDS]

You can't directly compare array variables. Since AutoIt is so loosely typed, and an array can contain different variant types (not recommended, but often done anyway), it would require a thick manual just to define the comparison rules.

So in AutoIt you have iterate the compare yourself.

A quick _ArrayCompare() UDF with exactly the rules you want should be easy to write, though.

Edited July 30, 2010 by PsaltyDS