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guiKey
 Post subject: Variable scope
PostPosted: January 4th, 2007, 9:23 pm 
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Joined: November 25th, 2006, 9:02 am
Posts: 13
Quote:
If you declare a variable at the start of your script and outside any functions it exists in the Global scope and can be read or changed from anywhere in the script.
If you declare a variable inside a function it is in Local scope and can only be used within that same function. Variables created inside functions are automatically destroyed when the function ends.

(from "AutoIt Language Reference")


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jonny
 Post subject:
PostPosted: January 4th, 2007, 11:16 pm 
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Joined: November 13th, 2004, 4:08 am
Posts: 2951
Location: Minnesota
... So what's your request?


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guiKey
 Post subject:
PostPosted: January 4th, 2007, 11:25 pm 
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Joined: November 25th, 2006, 9:02 am
Posts: 13
Quote:
To refer to an existing global variable inside a function (or create a new one), declare the variable as global prior to using it.

(from AutoHotkey Help)

Can anyone just notice any difference?


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jonny
 Post subject:
PostPosted: January 4th, 2007, 11:28 pm 
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Joined: November 13th, 2004, 4:08 am
Posts: 2951
Location: Minnesota
It would be nice if you would state it clearly. Are you saying that inside a function, references should first go to global variables?

And keep in mind that in AutoIt, you have to declare variables before you use them. In AutoHotkey, you don't. This key difference affects the way variables have to be treated.


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Chris
 Post subject:
PostPosted: January 5th, 2007, 1:50 am 
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Joined: March 2nd, 2004, 3:36 pm
Posts: 10720
There is a plan to have superglobals that are visible inside any function. Although it increases flexibility, it does so at the cost of purity and maintainability. But on balance, it seems better to have it than not have it.

I'm not sure when this will get implemented. It might be after AutoHotkey version 2.


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LOL
 Post subject:
PostPosted: May 23rd, 2007, 7:47 pm 
Quote:
And keep in mind that in AutoIt, you have to declare variables before you use them. In AutoHotkey, you don't. This key difference affects the way variables have to be treated.
. LOL Thats totally wrong. Autoit has an option which can be set so you NEED to declare a variable before use. But it is not defualt.


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