[Solved] Analyse an array ?

[hcI]

Hello everyone !

I have a little problem

I would like to do a little program who analyse an array and return the 1st line of the array who is empty

For example :

Global $aArray[5] = "abc","def","ghi","","mno"
; And Then, (maybe a For loop who) return in a variable "4"
; because the 4th case of the array is empty

I've took a look in helpfile but found nothing intrusting..

If someone have already done this or have idea how to proceed..

Hci

Edited January 22, 2017 by hcI
Problem resolved

[SadBunny]

Sure... Something like this:

Global $aArray[5] = ["abc", "def", "ghi", "", "mno"]

MsgBox(64, "first empty index", getFirstEmptyIndex($aArray))

Func getFirstEmptyIndex($ar)
    For $index = 0 to UBound($ar) - 1
        If $ar[$index] = "" Then Return $index
    Next
    Return -1
EndFunc   ;==>getFirstEmptyIndex

Note that it will return a 3 as arrays are 0-based, instead of the 4 you expected. If you need it to return 4, you can easily fix that in this snippet.

[InunoTaishou]

SadBunny's example will work just fine for what OP wants but one of the problems with autoit and strings is the implicit conversion to 0 when a string is empty.

Global $aArray[5] = ["abc", "def", "ghi", 0, "mno"]

MsgBox(64, "first empty index", getFirstEmptyIndex($aArray))

Func getFirstEmptyIndex($ar)
    For $index = 0 to UBound($ar) - 1
        If $ar[$index] = "" Then Return $index
    Next
    Return -1
EndFunc   ;==>getFirstEmptyIndex

0 is a valid value and that index is not empty (just the int representation of zero). This is really just for future reference but when looking for empty strings, I like to use StringLen instead when checking for a null string

Global $aArray[5] = ["abc", "def", "ghi", 0, "mno"]

MsgBox(64, "first empty index", getFirstEmptyIndex($aArray))

Func getFirstEmptyIndex($ar)
    For $index = 0 to UBound($ar) - 1
        If (StringLen($ar[$index]) = 0) Then Return $index
    Next
    Return -1
EndFunc   ;==>getFirstEmptyIndex

 

[jchd]

One needs to define "empty".  If the use case is only finding an empty string, then the only sure way is to test for both datatype and string length.

[hcI]

Thanks you guys for helping !

Thanks you really much.