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Re: Tutorial: Introduction to Object-Oriented Programming

by gjb (Vicar)
on Dec 10, 2002 at 15:58 UTC ( #218813=note: print w/replies, xml ) Need Help??


in reply to Tutorial: Introduction to Object-Oriented Programming

    1. It is considered bad form for an object to die(). There are many reasons for this, but the most important one is that you cannot know every context in which your class might be used -- you might think that being unable to establish a database connection is worth dieing for, but what if I rewrote your script to try to use the database first and then fall back on a plain file if I couldn't establish a connection. Normally, the right thing to do is to set a flag and highlight the fact in the documentation that the user should check the flag before assuming that everything is ok.

I don't agree with this statement: die in an class/object method can be viewed as throwing an exception which can be caught by an eval {...}; block. It is the responsibility of the programmer using the class to catch the exceptions. This is the way things work in Java and I rather appreciate it.

On the other hand, die is not sufficiently expressive to do the job, so if your intention is to point people to using the Exception or the Class::Exception modules, I couldn't agree more.

Or it could be that I completely miss your point...

Just my 2 cents, -gjb-

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[stevieb]: I found that win10 broke a C# library I was using for one project while enhancing tests for a Perl dist, which breaks other Perl dists, and I'm about to throw my hands up on berrybrew. win2k12 broke one thing, win10 breaks something...
[stevieb]: ...unrelated which requires replacing a lot of code and a whole lib. I'm about to go nix only ffs
[shmem]: stevieb: what you're doing sounds afwully complex. Too much for me this evening to provide brighter insight ;-)
[stevieb]: I don't even own a Windows computer. Both my girl and I have a laptop each with Linux. I'm supporting Windows in some of my projects and I can't even guage whether it's worth it or not.
[stevieb]: shmem It's something I desired to have years ago, which is why I took over berrybrew. Cross-platform build/test automation locally, or over the network Test::BrewBuild
[shmem]: sounds good.
[shmem]: but I'm crumbling smaller stones. remember...
[stevieb]: I'm working on it to fatten it up and make it more reliant so I can finalize my Raspberry Pi automated build system for that software :) It's all well and fun, until I try to make it work with Windows lol
[shmem]: "debugging a program is more difficult than to write it in the first place. If you code your program as smart as you are, you are, by definition, too dumb to debug it."

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