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hcI

[Solved] Analyse an array ?

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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 by hcI
Problem resolved

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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.


Roses are FF0000, violets are 0000FF... All my base are belong to you.

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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

 

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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.


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Another excellent RegExp tutorial. Don't forget downloading your copy of up-to-date pcretest.exe and pcregrep.exe here
RegExp tutorial: enough to get started
PCRE v8.33 regexp documentation latest available release and currently implemented in AutoIt beta.

SQLitespeed is another feature-rich premier SQLite manager (includes import/export). Well worth a try.
SQLite Expert (freeware Personal Edition or payware Pro version) is a very useful SQLite database manager.
An excellent eBook covering almost every aspect of SQLite3: a must-read for anyone doing serious work.
SQL tutorial (covers "generic" SQL, but most of it applies to SQLite as well)
A work-in-progress SQLite3 tutorial. Don't miss other LxyzTHW pages!
SQLite official website with full documentation (may be newer than the SQLite library that comes standard with AutoIt)

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hcI

Thanks you guys for helping !

Thanks you really much.

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