francoiste

scope of local variables inside a FOR loop?

4 posts in this topic

what's the scope of local variables inside a "For" loop?

the following snippet throws an error when doing the 2nd loop:

For $i = 1 To 5
    Local Const $sIteration = "iteration: " & $i

    ConsoleWrite($sIteration & @CRLF)
Next

the error says: "Can not redeclare a constant"

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In AutoIt variables have 2 scopes, Global (any variable created outside of a function is considered to be global regardless of whether you use the keywords Global, Local, Dim or no keyword), and Local, which is any variable created inside a function that isn't specifically declared as Global in that function.

There is no file or loop scope, so redeclaring that variable elsewhere will give you that error.


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Using "Const" you create a constant and not a variable
Using "Local" you can reinitialize a variable, but "once created, you cannot change the value of a constant." (help file)

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