Help with Arrays

[weasel127]

Hi, I'm trying to make a program that deals with splitting strings and storing them to arrays.

First, I need to split a string into StringA and StringB. So my code looks like this:

$String = StringSplit("StringA,StringB",",")
For $n = 1 to $String[0]
    MsgBox(0,"String", $String[$n])
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When I tried running this code, I got an error "Array variable has incorrect number of subscripts or subscript dimension range exceeded.: "

I don't understand why the ArrayDisplay would work, but the individual MsgBoxes would not.

[enaiman]

The problem is that you're using a 2 dimensional array here:

For $b = 1 to $Letters[1][0]

while your array is 1 dimensional

$Letters[$n] = StringSplit($String[$n],"")

[weasel127]

But if I do a StringSplit, then shouldn't the array turn into 2 Dimentional?

So this

$Letters[1] = StringSplit($String[1],"")

would become $Letters[1][1 to 7] ?

[enaiman]

Well ... not really because you declared your array as being 1 dimensional

Global $Letters[$String[0] + 1]

My guess it is that you will need to put $Letters[1] into another variable and to tweak a little bit your script.

[PsaltyDS]

Hi, I'm trying to make a program that deals with splitting strings and storing them to arrays.

First, I need to split a string into StringA and StringB. So my code looks like this:

When I tried running this code, I got an error "Array variable has incorrect number of subscripts or subscript dimension range exceeded.: "

I don't understand why the ArrayDisplay would work, but the individual MsgBoxes would not.

You entered the weird, wonderful world of arrays stored in arrays...

You are storing the entire array returned by StringSplit() in a single element of the $Letters array. $Letters is still a 1D array. The array stored in one of its elements CANNOT be accessed directly. It must read out to its own varible ($avTemp in mine) first, and then used.

The working code:

#include <Array.au3>

$String = StringSplit("StringA,StringB",",")
For $n = 1 to $String[0]
    MsgBox(0,"String", $String[$n])
Next

Global $Letters[$String[0] + 1]

For $n = 1 to $String[0]
$Letters[$n] = StringSplit($String[$n],"")
Next

For $n = 1 to $String[0]
    $avTemp = $Letters[$n]
    For $b = 1 to $avTemp[0]
        MsgBox(0,"Letters",$avTemp[$b])
    Next
Next

Record this on your iPod and play it back to yourself all night as you sleep... "Arrays are our friends, arrays are our friends, arrays..."

[enaiman]

Another working version of your code - lol

#include <Array.au3>

$String = StringSplit("StringA,StringB",",")
For $n = 1 to $String[0]
    MsgBox(0,"String", $String[$n])
Next

For $n = 1 to $String[0]
    $Letters = StringSplit($String[$n],"")
    For $k=1 to $Letters[0]
        MsgBox(0,"Letters",$Letters[$k])
    Next
Next

[weasel127]

Sorry, I don't understand what you mean by put it into another variable. Now I tried declaring it as a 2 Dimensional array but just running this gives me an error.

#include <Array.au3>

$String = StringSplit("StringA,StringB",",")

Global $Letter[$String[0] + 1][8]   ;Here I try declaring it 2 dimensional

For $n = 1 to 2
$Letter[$n] = StringSplit($String[$n],"")   ;Now I try to store it into $Letter[1][1 to 7] and $Letter[2][1 to 7]
Next

I don't really understand using arrays, all I have figured out is that if you want an array $Array[1] to $Array[7], then you declare $Array[8] instead if $Array[7], so that's why I declared it as Global $Letter[$String[0] + 1][8]

[enaiman]

Look at the previous posts

[weasel127]

Thank you for the code, but I need to store all the data into some variable, but that code will overwrite the data after each run. I think the problem is how I declare the arrays because I'm not sure how you would declare 2 dimensional arrays and then store information into it.

EDIT: Here is an example of the problem:

$String = StringSplit("StringA,StringB",",")
;So now after this the data is:
;String[1] = 'StringA'
;String[2] = 'StringB'

Global $Letter[2][8] ;Now declaring so I can put data into $Letter[1][1 to 7]


$Letter[1] = StringSplit($String[1],"") ;Now I am just testing storing $Letter[1][1 to 7] but I get an error

Edited June 28, 2007 by weasel127

[PsaltyDS]

Sorry, I don't understand what you mean by put it into another variable. Now I tried declaring it as a 2 Dimensional array but just running this gives me an error.

Look at my working code. I only changed the final loop.

I don't really understand using arrays, all I have figured out is that if you want an array $Array[1] to $Array[7], then you declare $Array[8] instead if $Array[7], so that's why I declared it as Global $Letter[$String[0] + 1][8]

A 1D array is just a numbered list, and it is numbered from 0 (zero-based is the term of art). To list eight items, zero-based, on pen and paper, you would number them 0 thru 7. A 1D array is just like that.

Sometimes, like with StringSplit(), the first entry [0] is used to store the count, so you need one extra element. To store eight items this way, you declare the array with an extra element:

Dim $Array[9]
$Array[0] = 8 ; Count

A 2D array is just row/column table, like any spreadsheet. Displaying a 2D array using _ArrayDisplay() makes this obvious.

It is a strange piece of trivia that AutoIt allows you to store an entire array inside one element of another array. Your code did that (entirely by accident, I gather). I was just trying to explain what happened, and how that technique could be made to work.

[weasel127]

Thanks enaiman and PsaltyDS on clearing up how to use arrays properly, I think I understand how to use arrays correctly now.