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Re: BlueJ Coding Help

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On 9/1/2013 9:47 AM, Daniele Futtorovic wrote:
> On 2013-09-01 11:05, Jukka Lahtinen allegedly wrote:
>> Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> writes:
>>> On 2013-08-31 17:30, Jukka Lahtinen allegedly wrote:
>>>> ram@zedat.fu-berlin.de (Stefan Ram) writes:
>>>>> Jukka Lahtinen <jtfjdehf@hotmail.com.invalid> writes:
>>>>>> The method System.out.println always adds a linefeed
>>>>>> at the end of the
>>>>>> output, and you add one yourself with the \n.
>>
>>>>>    "\n" might not be the system's line separator.
>>
>>>> True, but is there a system where it doesn't cause a linefeed?
>>
>>> Macintoshes, pre-OS X if I'm not mistaken, used \r (carriage return) as
>>> the line separator.
>>
>> I thought they use LF and CR (in that order, opposite to the DOS world),
>> not only the CR. I never used them myself, don't they do anything with
>> just a LF that doesn't come with CR?
>
> No, just the carriage return.
>
> I do not know what they would have done with a line feed, sorry. For my
> practical purposes, MacOS has always been ancient history (as opposed to
> OSX, which uses LF).
>
> They just use the carriage return. It's one of those things you just
> pick up. Because whenever the geeks ramble, like old cow-boys around the
> fire, multiple parallel soliloquies, and one of them ever-so-slightly
> implicitly associates the EOL sequence with a LF character, you'll
> invariably have one of the thither silent ones jump up and interject:
> "Tut tut tut, LF might /not be/ the line separator", in an ominous tone.
> And then the one who made the association falls silent, for he knows he
> has sinned; and then all the greenhorns perk up, ravished by this new
> mysterious development; and they press the old hands with questions, to
> pierce the mystery. A satisfied smile settles on the faces of the old
> hands, and after a little pressing (etiquette obliges), they will go
> into lively discussions about ye olden days (discussions which might
> actually, but not necessarily, address the mystery at hand)... which I'd
> personally love to do, 'cause it's fun and it's knowledge, but can't, so
> I'm just giving you the meta.

I think that description is rather accurate.

But I still think that it is relevant to bring it up.

There are certain things about portability that developers
should learn at some point.

LF terminated, CRLF terminated, CR terminated, count prefix,
count prefix & suffix variable length line formats.

Little and big endian.

IEEE floating point and other floating point formats.

Unicode, UTF-8, UTF-16, ISO-8859-1, ASCII, EBCDIC for text.

Etc.

Arne

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BlueJ Coding Help Marcelo Rodriguez <mrodvicente@gmail.com> - 2013-08-30 17:30 -0700
  Re: BlueJ Coding Help Jukka Lahtinen <jtfjdehf@hotmail.com.invalid> - 2013-08-31 09:41 +0300
    Re: BlueJ Coding Help Eric Sosman <esosman@comcast-dot-net.invalid> - 2013-08-31 11:26 -0400
    Re: BlueJ Coding Help Jukka Lahtinen <jtfjdehf@hotmail.com.invalid> - 2013-08-31 18:30 +0300
      Re: BlueJ Coding Help Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2013-09-01 02:20 +0200
        Re: BlueJ Coding Help Jukka Lahtinen <jtfjdehf@hotmail.com.invalid> - 2013-09-01 12:05 +0300
          Re: BlueJ Coding Help Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2013-09-01 15:47 +0200
            Re: BlueJ Coding Help Arne Vajhøj <arne@vajhoej.dk> - 2013-09-01 18:35 -0400
              Re: BlueJ Coding Help Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2013-09-02 13:53 +0200

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