On Thu, Sep 17, 2009 at 01:07:28AM -0300, Gabriel Genellina wrote:
> «Whenever I'm trying to write a program without GO TO statements,
> I waste an inordinate amount of time in deciding what type of iterative
> clause to use (while or repeat, etc.). The reason is that our notations
> aren't really complete. I know in my head what I want to do, but I have
> to translate it painstakingly into a notation that often isn't well-suited
> to the mental concept. I know I want to repeat something over and over,
> and it's easy for me to give a step-by-step description; "first do α,
> then β, then if γ we are done, otherwise do δ and we're in the same
> situation we started." Now this is not suited to present
> languages since I have to test γ either first or last, writing:
>
> α; β; while not γ do { δ; α; β }
[snip]
> Surely you must face the same dilemma. I really want to say is
> something like:
>
> loop { α; β; if γ then exit; δ } end loop;
>
> Since this is a frequent mental construct, in my experience, I believe
> it deserves a suitable syntax. Otherwise we also find ourselves testing
> the same condition twice.»
beh, y no hay ningún teorema piola para convertir el primero en el segundo?
se me hace que es una boludez, pero al mismo tiempo estoy algo oxidado con las
triplas de hoare...
--
(Not so) Random fortune:
Ey, I no can da kine if you no like da kine, too!
-- "Pidgin to Da Max"
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