E1M1 Posted June 19, 2011 Share Posted June 19, 2011 (edited) $var = 0 If $var = "" Then MsgBox(0,0,"empty") EndIf Why does this code display msgbox? 0 isnt same as "" because with 0 we can still talk about some value, it's 0 but with "" we cant even talk about 0 value because then there's no value. also msgbox pops up in this code $var = 0 If $var = false and $var = "" Then MsgBox(0,0,"empty") EndIf Edited June 19, 2011 by E1M1 edited Link to comment Share on other sites More sharing options...
Mikeman27294 Posted June 19, 2011 Share Posted June 19, 2011 That is weird... Try using another variable name such as this: $Variable=0 If $Variable=0 Then MsgBox(0,0,"Empty") Endif If that doesnt work, then try this. $Variable=0 Select Case $Variable=0 MsgBox(0,0,"Empty") EndSelect Link to comment Share on other sites More sharing options...
E1M1 Posted June 19, 2011 Author Share Posted June 19, 2011 (edited) both codes popup msgbox. does it happen on your side too? or am I only one who have this problem? Edited June 19, 2011 by E1M1 edited Link to comment Share on other sites More sharing options...
Mikeman27294 Posted June 19, 2011 Share Posted June 19, 2011 Nope. It works for me. Try updating your AutoIT software. Link to comment Share on other sites More sharing options...
E1M1 Posted June 19, 2011 Author Share Posted June 19, 2011 Ok 'ill try it, but for some reason this popped up msgbox for me If "" = 0 And false = 0 And False = "" Then MsgBox(0,0,"omg") EndIf I'll let you know if updating helped me. edited Link to comment Share on other sites More sharing options...
jchd Posted June 19, 2011 Share Posted June 19, 2011 (edited) This is normal. Read help file at Language Reference - DatatypesIf you want a strict binary-wise compare, use ==Also lookup Operators in help.BTW, 0 is indeed a value, but "" is a value as well: it is an empty string, or put otherwise, a string of length 0.Several languages or contexts also have a way to denote actual absence of any value (e.g. SQL). Edited June 19, 2011 by jchd This wonderful site allows debugging and testing regular expressions (many flavors available). An absolute must have in your bookmarks.Another excellent RegExp tutorial. Don't forget downloading your copy of up-to-date pcretest.exe and pcregrep.exe hereRegExp tutorial: enough to get startedPCRE 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) Link to comment Share on other sites More sharing options...
E1M1 Posted June 19, 2011 Author Share Posted June 19, 2011 (edited) just reinstalled it, still same problem. I have 3.3.6.1 Thank you jchd Edited June 19, 2011 by E1M1 edited Link to comment Share on other sites More sharing options...
Mikeman27294 Posted June 19, 2011 Share Posted June 19, 2011 Hahaha I am not quite sure why that worked. You know, when I am in doubt about what a variable is returning, I try something like this. $Variable=3 Msgbox(0,0,$Variable) Ofcourse, it would depend on the variale name as to what variable is set as the text. Also, placement in a program is extremely important. Say you want to multiply it by 5, and then figure out if it is multiplying correctly (which would be kinda awkward if it wasnt), then you would have something like this. $Variable=3 $Variable=$Variable*3 ;Or you could have $Variable*=3 which would do the same Msgbox(0,0,$Variable) Also, sometimes, if it is doing complex calculations based on dynamic variables instead of constants, then I would have a messagebox before and after the modifications to see what goes in and what comes out. Sometimes, I even have them inside to see how it is changing the variable as the modifications happen the the value inside the variable. [/Rant] (To relate that back to the topic) However, since your script is faultless, I dont know why it does that. but just to put that idea in your surely brilliant head (If it wasnt already there hahaha), there it is. I used that to check your variable, and it was indeed coming up with 0 on my computer after adding in that little msgbox, like so. $var = 0 If $var = "" Then MsgBox(0,0,"empty") EndIf MsgBox(0,0,$var) Try running that and see what it gives you. Link to comment Share on other sites More sharing options...
E1M1 Posted June 19, 2011 Author Share Posted June 19, 2011 (edited) Why doesn't array get resized?If Not $tabsdata[uBound($tabsdata) - 1][0] == "" Then This should redim array only if it's last element is not empty. $tabsdata[uBound($tabsdata) - 1][0] = 0 Gives value to array's last element.but msgbox doesnt popup. Why?Dim $tabsdata[1][8] If Not $tabsdata[UBound($tabsdata) - 1][0] == "" Then ReDim $tabsdata[UBound($tabsdata) + 1][8] EndIf $tabsdata[UBound($tabsdata) - 1][0] = 0 If Not $tabsdata[UBound($tabsdata) - 1][0] == "" Then ReDim $tabsdata[UBound($tabsdata) + 1][8] MsgBox(0,0,"Resized") EndIfedt it gets resized this wayDim $tabsdata[1][8] If Not $tabsdata[UBound($tabsdata) - 1][0] == "" Then ReDim $tabsdata[UBound($tabsdata) + 1][8] MsgBox(0,0,"Resized") EndIf $tabsdata[UBound($tabsdata) - 1][0] = 0 If stringlen($tabsdata[UBound($tabsdata) - 1][0]) > 0 Then ReDim $tabsdata[UBound($tabsdata) + 1][8] MsgBox(0,0,"Resized") EndIf Edited June 19, 2011 by E1M1 edited Link to comment Share on other sites More sharing options...
jchd Posted June 19, 2011 Share Posted June 19, 2011 (edited) Beware of operator's precedence!If Not $tabsdata[uBound($tabsdata) - 1][0] == "" Thengets parsed as If (Not $tabsdata[uBound($tabsdata) - 1][0]) == "" Thenwhile what you're looking for is:If Not ($tabsdata[uBound($tabsdata) - 1][0] == "") ThenIf fact, you probably want something else. Cut&Paste error.Read: you should also know about UBound parameters.Try running this:Dim $tabsdata[1][8] ConsoleWrite(UBound($tabsdata, 0) & @LF) ConsoleWrite(UBound($tabsdata) & @LF) ; same as ConsoleWrite(UBound($tabsdata, 1) & @LF) ConsoleWrite(UBound($tabsdata, 2) & @LF) Edited June 19, 2011 by jchd This wonderful site allows debugging and testing regular expressions (many flavors available). An absolute must have in your bookmarks.Another excellent RegExp tutorial. Don't forget downloading your copy of up-to-date pcretest.exe and pcregrep.exe hereRegExp tutorial: enough to get startedPCRE 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) Link to comment Share on other sites More sharing options...
E1M1 Posted June 19, 2011 Author Share Posted June 19, 2011 that I know. but dodnt know that not thing. Thank you. edited Link to comment Share on other sites More sharing options...
GEOSoft Posted June 19, 2011 Share Posted June 19, 2011 Then now is as good a time as any to open the help file and study up on the proper usage of And/Or/Not. George Question about decompiling code? Read the decompiling FAQ and don't bother posting the question in the forums.Be sure to read and follow the forum rules. -AKA the AutoIt Reading and Comprehension Skills test.*** The PCRE (Regular Expression) ToolKit for AutoIT - (Updated Oct 20, 2011 ver:3.0.1.13) - Please update your current version before filing any bug reports. The installer now includes both 32 and 64 bit versions. No change in version number. Visit my Blog .. currently not active but it will soon be resplendent with news and views. Also please remove any links you may have to my website. it is soon to be closed and replaced with something else. "Old age and treachery will always overcome youth and skill!" Link to comment Share on other sites More sharing options...
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