On Oct 1, 2009, at 8:02 PM, Mariano Martinez Peck wrote: > Hi folks: First of all I have to say I am pretty sad that error > handling hasn't a special place in the PBE. In my opinion having a > good error handling is a MUST in every piece of code. We need to use > exceptions. I didn't collaborate at all with PBE so I cannot say > anything to no one :) I will try to write something for the next > version if you want. But first...
there is a chapter for the volume two. It is already written and was rewritten we will release it in the future for making the unpatient happy. > We need a better error handling. It is very common to have a > hierarchy of exceptions or errors. You have subclasses of Error for > example. And many times, you want to do or not to do or even do > something different depending on the error you got. Now, the > question is, how you do this in Squeak ??? have a look at the Exceptions test because they encode the rich exception mechanism of Smalltalk. I could send the exception chapter too :) > > This is the only (ugly) way I find to do it: > > [ a block of code where you do something that can singal different > exceptions ] > on: XXXErrror do: [ : ex | ex class = XXXError if True: [ 'I > do what I need to do when I get the error XXX' ]. > ex class = YYYError if > True: [ 'I do what I need to do when I get the error YYY' ]. > 'here I do in the rest of > the cases' > ] > > > But, I would like to have something like this: > > > [ a block of code where you do something that can singal different > exceptions ] > on: XXXError > do: [ : ex | 'I do what I need to do when I get the error > XXX' ] > on: YYYError > do: [ : ex | 'I do what I need to do when I get the error > YYY' ] > on: Error > do: [ : ex | 'here I do in the rest of the cases' ] > ensure: [ 'Here I do what I always need to do, no matter if > there is an error or not' ] > > > What do you think about this? does someone ever did something like > this ? perhaps we can put this as part of 1.1 > > I listen opinions. > > Best, > > Mariano > _______________________________________________ > Pharo-project mailing list > [email protected] > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project _______________________________________________ Pharo-project mailing list [email protected] http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project
