[fpc-pascal] Legitimate use of for and break

[Giuliano Colla]

Il 20/06/2023 09:05, Hairy Pixels via fpc-pascal ha scritto:

> Educators continuously have stupid ideas that don't work out as intended in the real world.  I would love to see them make a real program that does something difficult and not use early breaks.
>
> I assume them they forbid early exits in functions also or is the loop special for them?

You don't need something difficult to show that avoiding break is stupid!
Just take a loop searching a linked list for a specific item. You must 
test two conditions: item found or end of list. But the item you're 
searching might be the last one, so you can't test next=Nil at the 
beginning of a do-while loop. A repeat-until can't be used because the 
list might be empty.

I prefer in those cases use a function, and exit instead of break, so 
that the caller can easily test how the loop was terminated, but it's 
just a matter of tastes.

Giuliano

-- 
Do not do to others as you would have them do to you.They might have different tastes.