Hi! On Thu, Sep 29, 2005 at 10:49:40 +0200, TSa wrote: > BTW, I would call *intentional* exceptions terrorism.
Then I would call terrorism non linear control flow ;-) In that case Afghanistan might be harboring computer scientists that really like CPS, and bush is Java ;-) > In lack of a better word I use Event and we get > Event::Exception, Event::Control, Event::Warn and > possibly Event::Hint, Event::Log and Event::Fun :) An event is something external that happens... It does not affect the control flow of an application. Exceptions work well to describe this: The normal flow is up and down the call graph, laying bread crumbs in the form of a stack, and going back from where you came. Exceptions let you jump instantly to another place in the call graph. All I'm saying is that to complement the normal "exceptions jump back out", you can jump out, and jump back in. An event is a general thing that can be implemented with exception like semantics, but implies nothing on the control flow of the program. An error is an exception that happenned because something went badly wrong. Now it's my turn at illustrative metaphors ;-) The call graph is a big maze you go through. When you find an *error*, in the form of a minotaur, you use the exception handling mechanism to run away. You jump instantly to a safe place in the labyrinth. Although this is not consistent with the mythology, presume that the reason you entered the maze was that you were trying to get results. Most exception handlers are safe places when you can gather your self, realize that 'oh crap, i just met a minotaur', and tell whoever you sent you in there that there's no way you're going back in. All I'm trying to say is that when there is an exception - a leap out from a dangerous place to a safe one, due to an error, the code may choose to deal with the error by giving you a big stick. Then you can go back and beat the minotaur into submission, and resume with trying to get results. -- () Yuval Kogman <[EMAIL PROTECTED]> 0xEBD27418 perl hacker & /\ kung foo master: /me whallops greyface with a fnord: neeyah!!!!!!!
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