Re: Periodic Table of the Operators
Mark Lentczner wrote: All - Awhile back, I saw Larry Wall give a short talk about the current design of Perl 6. At some point he put up a list of all the operators - well over a hundred of them! I had a sudden inspiration, but it took a few months to get around to drawing it... http://www.ozonehouse.com/mark/blog/code/PeriodicTable.html Nice. Now to find a large enough printer to be able to pin it up on the wall. One minor quibble, in the Quasi Operators section there's a typo: s/Anonamizer/Anonymizer/ David - Mark Mark Lentczner http://www.ozonehouse.com/mark/ markl (at) glyphic (dot) com -- Commercial OS breeds commerce, whereas free OS breeds freedom, the only thing more dangerous and confusing than commerce. -- Michael R. Jinks, redhat-list, circa 1997
Re: Periodic Table of the Operators
Mark Lentczner wrote: All - Awhile back, I saw Larry Wall give a short talk about the current design of Perl 6. At some point he put up a list of all the operators - well over a hundred of them! I had a sudden inspiration, but it took a few months to get around to drawing it... http://www.ozonehouse.com/mark/blog/code/PeriodicTable.html Now that is truly a work of art. I look forward to seeing it evolve (and the corrections already suggested being made). And I can also see myself printing it out and putting it on the wall for use the moment I can get my hands on a Perl 6 compiler. Finally a use for the colour laser printer in the office... Well done.
Re: Periodic Table of the Operators
Hello, Mark Lentczner wrote: http://www.ozonehouse.com/mark/blog/code/PeriodicTable.html What's periodic about it? Otherwise, _nice_ table. Gabriel. -- Gabriel Ebner - reverse [EMAIL PROTECTED]
Re: Periodic Table of the Operators
Mark Lentczner wrote:
Awhile back, I saw Larry Wall give a short talk about the current design
of Perl 6. At some point he put up a list of all the operators - well
over a hundred of them! I had a sudden inspiration, but it took a few
months to get around to drawing it...
http://www.ozonehouse.com/mark/blog/code/PeriodicTable.html
Fascinating. I wish I had a printer big enough to do it justice.
Some thoughts:
Anonymizers: Is (...) really an anonymous-value constructor, in the same
class as [...] and {...}? Assuming that C-like comma isn't around any
more (was that finalized?) parentheses aren't really doing anything
fancy with respect to list construction. Now they are perhaps merely
grouping operators at precedence level 0.
Declars: does sub fall into this category? I ask because of the
symmetry of
$x = sub { ... };
and
$x = hash { ... };
but perhaps sub belongs in a different spot.
Comparisons and junction/bitmasks: The table has comparisons binding
tighter than junctions and bitwise operations. This is how Perl 5 has
it, which is because Perl 4 had it that way, which ultimately is because
C had it that way. One of the creators of C is on record[*] as saying
how that was an unfortunate mistake, because it meant you had to put
parentheses around
if ( (x 0xF) == 0xF )
or you didn't get the expected behaviour.
Since we're effectively abandoning a C-like pantheon of operators in
Perl6, maybe this is the time to make it right, and put the precedence as:
multiplication (6)
addition (7)
shifts (8)
bitmasks (9)
comparison (10, 11)
logical operators (12)
It would then mean no parentheses were needed in this Perl6:
if $x == 5|6 { ... }
(though I could buy an argument that putting parentheses in would be a
Good Idea).
[*] http://cm.bell-labs.com/cm/cs/who/dmr/chist.html
Re: Periodic Table of the Operators
Le Thu, May 27, 2004 at 12:34:32AM +0200, le valeureux mongueur Gabriel Ebner a dit: Hello, Mark Lentczner wrote: http://www.ozonehouse.com/mark/blog/code/PeriodicTable.html What's periodic about it? We hope it will be periodically updated. :) Otherwise, _nice_ table. indee.d Gabriel. -- stef
