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Re^7: passing data structures from java to perl

by exussum0 (Vicar)
on Jul 29, 2010 at 00:02 UTC ( #851827=note: print w/replies, xml ) Need Help??

in reply to Re^6: passing data structures from java to perl
in thread passing data structures from java to perl

One instance of using the Java API incorrectly is probably fine. Sure, there's lots of clever things you can do such as insert the same 2 items into a HashSet and get the same result every single time if you iterate over them and expect an order. (You're achieving the same state)

You can serialize a singleton, and deserialize it to get 2 copies.

I can also do 86400 seconds in a day, which is innacurate twice a year, but most of the time it's fine.

Sure, in perl I can do... new Foo instead of Foo->new.

Yeah, in the end it all may work out. In the IO case, java is validating the output as it's writing it and if someone does do Unicode->Latin1 because of that exact pattern, even if it works for this instance, you're teaching people a bad habit that can yield errors if they rubber stamp it all over the place.

You seem convinced to do this anyhow in your code. That's fine. Don't be surprised if other java devs don't look at it and go.. yeah, that looks wrong.

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Re^8: passing data structures from java to perl
by almut (Canon) on Jul 29, 2010 at 00:14 UTC

    And what has all this got to do with creating UTF-8 output?  I was explicitly talking about UTF-8, not Latin-1.

    If you think there's something wrong with what I suggested, please provide a compilable, self-contained sample that demonstrates an UnmappableCharacterException when encoding a unicode string to UTF-8.  Otherwise this is plain FUD.

      Latin-1 was an example my good monk. If someone learned this really bad pattern and one day bumps into Latin-1 (say in a db) it'll explode. It's exactly like using 86400 seconds in a day just 'cause it'll work today.

      I'm not going to test every JDK for you, every character set that the JDK supports to see what blows up. It's assumed that if you do things w/i parameters, it's a bug when it does blow up. Enjoy going on and on. I'm done here.

      Good nite. Good luck.

        There is no bad pattern, that's my point. Encoding unicode data as UTF-8 will not only work today or in one particular case, it will always work.

        But you have to know what you're doing, of course. And someone simply substituting Latin-1 for UTF-8, for me, falls into the category of not knowing what you're doing.

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