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in reply to Apocalypse 12
Very cool, thanks for the heads up.
I guess I know what I'm going to be doing tonight :-)
update: Ack!...
class Dog is Mammal;
has Limb @.paws;
method walk () { .paws».move() }
Umm, I have some questions here...
What on earth is that character?
A "right-pointing double angle quotation mark", eh?
Wow, that's a mouthful... and here I was thinking
weird non-ASCII quotation marks were a Microsoft
Word foible.- How do we pronounce it? update:
still looking for an answer to this
question
Why is there a character in the basic syntax
of the core language that can't be typed on
a standard-issue us-ascii keyboard? What
am I missing here?- How are we supposed to type it? Can we
just type >> and have it work,
or
are we going to have to find a way to
insert that character? (I know, in Emacs
I can bind a key combination to it, but what
about posting code on web fora, usenet, and
so forth?)update:
A12 does answer this, just not until page 19.
How are we supposed to do stuff with code
containing this character, such as copy and
paste it between applications, store it in
files, and so on?. Oddly, this
stuff seems to work for me using Emacs 21 on
Mandrake 9.2, even storing on a FAT32
filesystem. I'm still a little concerned about
cross-platform support for this, though.Am I overreacting? Can someone reassure
me about this and explain how it's okay?
I guess it's not _so_ bad, considering we
can just type >>
The only keyboard I've seen where I can type the
non-ASCII character in question is the DEC keyboard
used with the VT510, which has a Compose key. On that
keyboard, I can construct the character by typing
compose then > then > -- but that's three strokes,
which makes it at least as bad as a trigraph operator,
and in any case the VMS system in question doesn't
have Perl installed (or much else). I can use copy
and paste from A12 into Emacs and thus bind a key to
insert the character when I'm working in Emacs, but
I won't be able to easily use it in other situations,
e.g., when I'm discussing it on Perlmonks using
Mozilla. This is ultimately a minor annoyance,
since parallel dispatch isn't something I anticipate
using very often (update umm,
but some of the other uses are more important),
but nevertheless I reserve the right to not
like it. IfSince it turns out
that >> will work, I'll be much happier doing it
that way.
On a side note, Page 19 says...
But there is, of course, a hyper version
[of the identity operator]:
@a »=:=« @b
Yeesh. Typed on a standard keyboard, that's a
heptagraph operator. Wow. I thought the
Perl-is-line-noise people were annoying NOW. Wait
till they get a load of this!
;$;=sub{$/};@;=map{my($a,$b)=($_,$;);$;=sub{$a.$b->()}}
split//,".rekcah lreP rehtona tsuJ";$\=$;[-1]->();print
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Re: Re: Apocalypse 12
by hardburn (Abbot) on Apr 19, 2004 at 13:14 UTC
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Look at Apocalypse 3. There's just not enough characters in the ASCII set for all the operators people want to use. IIRC, '>>' will work.
----
: () { :|:& };:
Note: All code is untested, unless otherwise stated
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Re: Re: Apocalypse 12
by TwistedGreen (Sexton) on Apr 22, 2004 at 12:10 UTC
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Heck, there are even cross-platform compatibility issues if you stick to ASCII. Not all the world is ASCII.
Enough of the computer world supports ASCII that it's
reasonable to use any printable character from the
ASCII set. Platforms that don't use ASCII natively
should have translation utilities for it by now,
surely. Now, if you write code that changes case by
adding and subtracting or similar schenanighans, then
of course that's another matter, but just using a
printable ASCII character is a fairly portable thing.
(By "printable", I mean from decimal 32 up through
decimal 126. The control characters are more likely
causes of trouble.)
;$;=sub{$/};@;=map{my($a,$b)=($_,$;);$;=sub{$a.$b->()}}
split//,".rekcah lreP rehtona tsuJ";$\=$;[-1]->();print
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It is an ASCII character
<nitpick>
It definitely isn't an ASCII character. ASCII is only seven bits wide, and never included none o'them wierd "foreign" characters :-).
You will however find it in ISO 8859 (aka ISO Latin 1).
</nitpick>
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\begin{pedantic}
ASCII isn't necessarely 7 bits wide. There are 128 different characters, so you could encode them using just 7 bits. But that's pretty unusual, especially nowadays, given that bytes are typically 8 bits wide. Common ways of encoding ASCII characters use bytes, with either the high bit being 0, or by using one of the bits as a parity bit - to be able to do some error detection.
Also, ISO 8859 is a class of character sets, all supersets of ASCII, having the code points 0x80 - 0x9F undefined and the highest code point being 0xFF. But there are various mappings of the code points 0xA0 - 0XFF to characters; one of those mappings (for Western European languages) being ISO 8859-1, and only that one is known as ISO Latin-1. It's in many countries that used ISO 8859-1 superceeded by ISO 8859-15, which includes a € sign. But there are other mappings part of ISO 8859 as well.
\end{pedantic}
Abigail
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