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boomingranny

re-declairing variables query...

2 posts in this topic

When i create a global array, then recreate it the data inside is reset - this is great, just what i want!

however - when i create a global variable, then recreate it the data is kept... is this by design?

example code:

;declare variables
func Declare()
    global $test2
    global $test[4]
EndFunc


Declare()
;set variables
for $i= 1 to 3
    $test[$i] = "test"
next
$test2 = "test2"
;output variables
Output()
;re-declare variables
Declare()
;output them again, now that they have been re-declared
Output()

Exit

func Output ()
    for $i= 1 to 3
        msgbox (0, "test:", $test[$i])
    next
    msgbox (0, "test2:", $test2)
EndFunc

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When i create a global array, then recreate it the data inside is reset - this is great, just what i want!

however - when i create a global variable, then recreate it the data is kept... is this by design?

example code:

;declare variables
func Declare()
    global $test2
    global $test[4]
EndFunc
Declare()
;set variables
for $i= 1 to 3
    $test[$i] = "test"
next
$test2 = "test2"
;output variables
Output()
;re-declare variables
Declare()
;output them again, now that they have been re-declared
Output()

Exit

func Output ()
    for $i= 1 to 3
        msgbox (0, "test:", $test[$i])
    next
    msgbox (0, "test2:", $test2)
EndFunc

If a non-array variable is redeclared then the declaration is ignored unless it is a local variable inside a function in which case it is a different variable.

If a variable is an array then declaring it again resets all the values, but if you use the ReDim then the values are kept.

This shows the effect-

;declare variables
Global $test3 =99
 global $test[4]

Declare(4)
;set variables
for $i= 0 to UBound($test)-1
    $test[$i] = $i & "test"
next
$test2 = "test2"
;output variables
Output()
;re-declare variables
Declare(3)
;output them again, now that they have been re-declared
Output()
Local $test3
MsgBox(0,"test3 again",$test3)


func Declare($max)
    Local $test3 = 77;this variable is only seen inside the function
                    ;it will be used instead of a global variable of the same name if there is one
    global $test2
    ReDim $test[$max]
EndFunc

func Output ()
    for $i= 0 To UBound($test) - 1
        msgbox (0, "test:", $test[$i])
    next
    msgbox (0, "test2:", $test2)
    MsgBox(0,"test3:",$test3)
EndFunc

Serial port communications UDF Includes functions for binary transmission and reception.printing UDF Useful for graphs, forms, labels, reports etc.Add User Call Tips to SciTE for functions in UDFs not included with AutoIt and for your own scripts.Functions with parameters in OnEvent mode and for Hot Keys One function replaces GuiSetOnEvent, GuiCtrlSetOnEvent and HotKeySet.UDF IsConnected2 for notification of status of connected state of many urls or IPs, without slowing the script.

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