org.sonar.l10n.delphi.rules.community-delphi.TooManyVariables.html Maven / Gradle / Ivy
Too many variables can indicate that a routine is doing too many things.
Why is this an issue?
Using many variables in a routine can be an indicator that the routine is doing too many things.
A routine should be a single logical task, not a number of disconnected tasks.
Using a large number of redundant variables in a short span of code can also adversely affect
readability.
How to fix it
Consider breaking the routine up into multiple routines with different responsibilities:
procedure TMyObject.DoThing;
var
MyFoo: TFoo;
MyBar: TBar;
begin
MyFoo := TFoo.Create;
FMyFoo := MyFoo;
MyBar := TBar.Create;
FMyBar := MyBar;
end;
procedure TMyObject.DoFooThing;
var
MyFoo: TFoo;
begin
MyFoo := TFoo.Create;
FMyFoo := MyFoo;
end;
procedure TMyObject.DoBarThing;
var
MyFoo: TFoo;
begin
MyBar := TBar.Create;
FMyBar := MyBar;
end;
Another option is to inline unnecessarily verbose variables:
procedure TMyObject.DoThing;
var
MyFoo: TFoo;
MyBar: TBar;
begin
MyFoo := TFoo.Create;
FMyFoo := MyFoo;
MyBar := TBar.Create;
FMyBar := MyBar;
end;
procedure TMyObject.DoThing;
begin
FMyFoo := TFoo.Create;
FMyBar := TBar.Create;
end;
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