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Exit Stage Left

TPersistent.com – The Exit procedure has been around as long as Goto in Object Pascal.  Goto is considered an antiquated command, but what about about Exit?  When should it be used if at all? I have often seen guard code at the beginning of a method that performs an Exit if the parameters passed are not appropriate or indicate the method does not need to act on the parameters passed.  This might happen in a method like this: procedure TSomeForm.CheckHaveID(const AID: string); begin if AID EmptyStr then Exit; ...other code to populate AID if necessary... end; In this case the first few lines are a ...
Favorite? Off-Topic? Larry Hengen @ 2020-05-08 21:02


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