Variable help???

[dassksnz]

I was just wondering if someone could give me a explanation for the different variable type. I have read the help file and I don't get it. Please help???

[E1M1]

well here's 2 diferent types of variables

integer type:

$var = 123

string type

$var = "abs"

[guinness]

Also found this today in decided to take a gander and re-test my skills!

$bData = 0x0889787979 >> what does the "b" in $b<VarName> mean? See below...

$A<Letter> - Array (The Following Letter Describes The Data Type Taken From The Rest Of The Data 
Types Below)  
$B - Binary Data  
$H - File Or Window Handle  
$I - Integer  
$F - Boolean  
$N - Floating Point Number  
$S - String  
$V - Variant (Unknown/Variable Type Of Data)

Edited December 18, 2010 by guinness

[dassksnz]

What about the Dim Global and Local what is the difference?

[Realm]

@dassksnz, Straight out of the Help File:

The difference between Dim, Local and Global is the scope in which they are created:

Dim = Local scope if the variable name doesn't already exist globally (in which case it reuses the global variable!)

Global = Forces creation of the variable in the Global scope

Local = Forces creation of the variable in the Local/Function scope

You should use Local or Global, instead of Dim, to explicitly state which scope is desired for a variable/constant/array.

When using variables, the local scope is checked first and then the global scope second.

When creating arrays you are limited to up to 64 dimensions and/or a total of 16 million elements.

A unique feature in AutoIt is the ability to copy arrays like this:

$mycopy = $myarray

In this case $mycopy will be an exact copy of $myarray and will have the same dimensions - no Dim statement is required to size the array first. If AutoItSetOption("MustDeclareVars", 1) is active then the variable $mycopy would still need to be declared first, but would not need to be sized. If the variable $mycopy was already an array or single value it will be erased before the copy takes place.

To erase an array (maybe because it is a large global array and you want to free the memory), simply assign a single value to it:

$array = 0

This will free the array and convert it back to the single value of 0.

Declaring the same variable name again will erase all array values and reset the dimensions to the new definition. Declaring a variable with a simple value in the same scope will not change the value in the variable.

If you declare a variable with the same name as a parameter, using Local inside a user function, an error will occur. Global can be used to assign to global variables inside a function, but if a local variable (or parameter) has the same name as a global variable, the local variable will be the only one used. It is recommended that local and global variables have distinct names.

Realm

Edited December 18, 2010 by Realm