True, but you must have wasted a chunk of time today figuring out wtf was going on!
Another day in the life of a programmer™ Regards, Narinder Chandi, ToolBox Systems Ltd. -- -----Original Message----- From: Chip Scheide <[email protected]> Date: Tuesday, 9 July 2019 at 20:23 To: 4D Tech Mailing List <[email protected]> Cc: Narinder Chandi <[email protected]> Subject: Re: What is wrong with this statement? Corrected At least it is easy to work around... On Tue, 09 Jul 2019 20:18:18 +0100, Narinder Chandi via 4D_Tech wrote: > Well, that is quite odd given that is "just" an array after all but > internally it seems 4D is treating it is something a bit different?? > It seems like an interpreter bug to me... > > Regards, > > Narinder Chandi, > ToolBox Systems Ltd. > -- > > -----Original Message----- > From: Chip Scheide <[email protected]> > Date: Tuesday, 9 July 2019 at 20:01 > To: 4D Tech Mailing List <[email protected]> > Cc: Narinder Chandi <[email protected]> > Subject: Re: What is wrong with this statement? Corrected > > hmm v12... > > OK - I tracked it down. > > It has to do with Listboxes.... > a 'normal' array works as expected, however, if the array is a listbox > column (array based - did not try a selection listbox) then the code > fails. > > For some reason, when referencing the contents of a listbox column the > value inside the { } can not be an expression (at least in v13). Even a > simple expression {2+8-6} fails. > > Chip > > > > On Tue, 09 Jul 2019 19:32:05 +0100, Narinder Chandi via 4D_Tech wrote: > > That was with 17.2 Mac and I also tested the same code just now with > > 15.4 Mac and 12.4 Mac successfully too. > > > > Regards, > > > > Narinder Chandi, > > ToolBox Systems Ltd. > > -- > > > > -----Original Message----- > > From: 4D_Tech <[email protected]> on behalf of 4D Tech > > Mailing List <[email protected]> > > Reply-To: 4D Tech Mailing List <[email protected]> > > Date: Tuesday, 9 July 2019 at 19:16 > > To: 4D Tech Mailing List <[email protected]> > > Cc: Chip Scheide <[email protected]> > > Subject: Re: What is wrong with this statement? Corrected > > > > what version - it might be that the issue is resolved in a newer > > version (>v13) then I am working in... > > > > On Tue, 09 Jul 2019 18:30:33 +0100, Narinder Chandi via > 4D_Tech wrote: > > > Chip, > > > > > > If I interpreted it correctly, I just created this code > block based > > > on your spec. and variable naming: > > > > > > ARRAY LONGINT(array1;2) > > > array1{1}:=4 > > > array1{2}:=2 > > > > > > ARRAY LONGINT(array2;10) > > > C_LONGINT($i) > > > For ($i;1;10) > > > array2{$i}:=-$i > > > End for > > > > > > C_POINTER($Return_ptr) > > > C_POINTER($Column1) > > > $Return_ptr:=->array1 > > > $Column1:=->array2 > > > > > > C_LONGINT($Item) > > > $Item:=2 > > > > > > C_LONGINT($Result) > > > $Result:=$Column1->{$Return_ptr->{$Item}} > > > TRACE > > > > > > It doesn't generate an error for me and the debugger shows the > > > expected values when I execute it. Is my implementation > "incorrect"? > > > ...or there is it down to some other issue?? > > > > > > Regards, > > > Narinder Chandi, > > > ToolBox Systems Ltd. > > > -- > > > > > > -----Original Message----- > > > From: Chip Scheide <[email protected]> > > > Date: Tuesday, 9 July 2019 at 17:57 > > > To: 4D Tech Mailing List <[email protected]> > > > Cc: Narinder Chandi <[email protected]> > > > Subject: Re: What is wrong with this statement? Corrected > > > > > > yes - an intermediate value works, I was more > wondering why the > > > original statement will not work... > > > as it appears to be a perfectly valid statement. > > > > > > Replacing the array element reference with a simple math > > formula works. > > > i.e. > > > Array{2+8-6} > > > give the value of element 4 (assuming there is one) > > > > > > there should not be an issue with a valid formula > inside set > > > brackets.... > > > ohh well... > > > > > > Chip > > > > > > > > > On Tue, 09 Jul 2019 17:32:10 +0100, Narinder Chandi via > > 4D_Tech wrote: > > > > Does it work if you do use an intermediate value? e.g. > > > > > > > > $value:= $Return_ptr-> {$Item} > > > > $Result:= $Column1 ->{$value} > > > > > > > > Regards, > > > > > > > > Narinder Chandi, > > > > ToolBox Systems Ltd. > > > > -- > > > > > > > > -----Original Message----- > > > > From: 4D_Tech <[email protected]> on behalf of > > 4D Tech > > > > Mailing List <[email protected]> > > > > Reply-To: 4D Tech Mailing List <[email protected]> > > > > Date: Tuesday, 9 July 2019 at 17:16 > > > > To: 4D Tech Mailing List <[email protected]> > > > > Cc: Chip Scheide <[email protected]> > > > > Subject: Re: What is wrong with this statement? Corrected > > > > > > > > My bad -- the correct line of code that is failing is: > > > > $Result:= $Column1 ->{ $Return_ptr-> {$Item} } > > > > > > > > On Tue, 9 Jul 2019 12:14:37 -0400, Chip Scheide via > > 4D_Tech wrote: > > > > > $Result:= $Column1{ $Return_ptr{$Item} } > > > > --------------- > > > > Gas is for washing parts > > > > Alcohol is for drinkin' > > > > Nitromethane is for racing > > > > > > > > ********************************************************************** > > > > 4D Internet Users Group (4D iNUG) > > > > Archive: http://lists.4d.com/archives.html > > > > Options: https://lists.4d.com/mailman/options/4d_tech > > > > Unsub: mailto:[email protected] > > > > > > > > ********************************************************************** > > > > > > > > > > > > > > ********************************************************************** > > > > 4D Internet Users Group (4D iNUG) > > > > Archive: http://lists.4d.com/archives.html > > > > Options: https://lists.4d.com/mailman/options/4d_tech > > > > Unsub: mailto:[email protected] > > > > > > ********************************************************************** > > > --------------- > > > Gas is for washing parts > > > Alcohol is for drinkin' > > > Nitromethane is for racing > > > > > > > > > > ********************************************************************** > > > 4D Internet Users Group (4D iNUG) > > > Archive: http://lists.4d.com/archives.html > > > Options: https://lists.4d.com/mailman/options/4d_tech > > > Unsub: mailto:[email protected] > > > > ********************************************************************** > > --------------- > > Gas is for washing parts > > Alcohol is for drinkin' > > Nitromethane is for racing > > > ********************************************************************** > > 4D Internet Users Group (4D iNUG) > > Archive: http://lists.4d.com/archives.html > > Options: https://lists.4d.com/mailman/options/4d_tech > > Unsub: mailto:[email protected] > > > ********************************************************************** > > > > > > ********************************************************************** > > 4D Internet Users Group (4D iNUG) > > Archive: http://lists.4d.com/archives.html > > Options: https://lists.4d.com/mailman/options/4d_tech > > Unsub: mailto:[email protected] > > ********************************************************************** > --------------- > Gas is for washing parts > Alcohol is for drinkin' > Nitromethane is for racing > > > ********************************************************************** > 4D Internet Users Group (4D iNUG) > Archive: http://lists.4d.com/archives.html > Options: https://lists.4d.com/mailman/options/4d_tech > Unsub: mailto:[email protected] > ********************************************************************** --------------- Gas is for washing parts Alcohol is for drinkin' Nitromethane is for racing ********************************************************************** 4D Internet Users Group (4D iNUG) Archive: http://lists.4d.com/archives.html Options: https://lists.4d.com/mailman/options/4d_tech Unsub: mailto:[email protected] **********************************************************************
