[Lazarus] 'with' is evil, isn't it?

[Jürgen Hestermann]

 >> -----------------------------------------------------------------------
 >> with Uebergabe^, Qarray[QuaderNr]^.Teilung[R] do
 >>   AusdehnungInMeter := (Feldgrenzen[length(Einteilungen)+1] -
 >>                                       Feldgrenzen[1]) *
 >>                                       
EinheitAuswahl[Einheit.Koord[R]].Faktor;
 >> -----------------------------------------------------------------------
 >>
 > Why put Uebergabe^ in the with? It appears only once?

Yes, that's true. I just picked an arbitrary example from my code to get 
the idea. I have lots of with statements with similar "with-variables". 
Sometimes  they are used only once and in other cases they are used more 
often.


 > Assuming objects, better add helper methods
 > function TFooTeilung.GetLastFirstDiff;
 > begin
 >   Result := Feldgrenzen[ length(Einteilungen)+1 ] - Feldgrenzen[1];
 > end

I don't want to add runtime penalties by calling functions (with stack 
handling overhead).


 > AusdehnungInMeter :=
 >    Qarray[QuaderNr]^.Teilung[R].  GetLastFirstDiff
 >    *  EinheitAuswahl[Uebergabe^.Einheit.Koord[R]].Faktor;
 > You can also introduce
 >    FeldgrenzenBackwards[x]
 > where 0 returns the last, 1 the one before last ....

Same reason: It's slower and does not add any benefit.

Of course, there is an inifite way of coding things and the with 
statement is one of them.