Author: larry
Date: Tue Jan 30 19:05:36 2007
New Revision: 13556
Modified:
doc/trunk/design/syn/S01.pod
Log:
Forgot to change the date... :)
Modified: doc/trunk/design/syn/S01.pod
==
--- doc/trunk/design/syn/S01.pod
Author: larry
Date: Tue Jan 30 19:00:44 2007
New Revision: 13555
Modified:
doc/trunk/design/syn/S01.pod
Log:
While the month of Nob is cute...
Modified: doc/trunk/design/syn/S01.pod
==
--- doc/trunk/design/syn/S01.po
Author: larry
Date: Tue Jan 30 18:54:32 2007
New Revision: 13554
Modified:
doc/trunk/design/syn/S03.pod
Log:
Deleted stylistic notes ill-suited for a spec.
Modified: doc/trunk/design/syn/S03.pod
==
--- doc/trunk/desi
Larry Wall wrote:
And @x[*] would be
@x[*+0..^*-0]
written out that way. Or possibly
@x[-* ..^ +*]
depending on how we define the unaries.
Hmm... how about this:
Normally, * in the context of an indexer acts as a Range object,
covering the range of available indices (defined inclu
Author: larry
Date: Tue Jan 30 18:40:29 2007
New Revision: 13553
Modified:
doc/trunk/design/syn/S03.pod
Log:
Various suggestions by Nick++
Modified: doc/trunk/design/syn/S03.pod
==
--- doc/trunk/design/syn/S03.pod
At 12:11 PM -0800 1/30/07, [EMAIL PROTECTED] wrote:
Log:
Disabled negative subscript dwimmery for all shaped arrays.
* can now take + and - operators.
At 2:54 PM -0800 1/30/07, Jonathan Lang wrote:
Could we get a single-character symbol that could be used in an array
index to refer to its shap
At 9:07 PM +0100 1/30/07, TSa wrote:
BTW, does floor return an Int or a Num?
A floor() returns an Int of course, because by definition floor()
returns an integer. See http://en.wikipedia.org/wiki/Floor_function
for an explanation. Same with ceiling(), and some other operators.
If anything,
On Tue, Jan 30, 2007 at 03:47:34PM -0800, Larry Wall wrote:
: This mornings up date proposed
Now the da rn spam fi1ters are chang.ng my spelling to look like sp*m.
Yeah, that's the 4icket... :)
Larry
On Tue, Jan 30, 2007 at 02:54:26PM -0800, Jonathan Lang wrote:
: Could we get a single-character symbol that could be used in an array
: index to refer to its shape in a dwimmy way? Something like:
:
: @x[*.head]
: @x[*.tail] # equivalent to @x[*]
: @A[*.head+2, *.tail-1]
:
: (where head and
Larry Wall wrote:
Um, negative indices on shaped arrays were outlawed several hours ago...
Yeah; I hadn't gotten around to that when I posted this. Sorry about that.
--
Jonathan "Dataweaver" Lang
On Tue, Jan 30, 2007 at 02:19:01PM -0800, Jonathan Lang wrote:
: It's the sort of thing that I could see using a trait for: 'my @array
: but oroborus' would invoke an implicit modulus on the index, while
: standard arrays would not. Likewise, those who don't want the
: backward-indexing semantics
On Tue, Jan 30, 2007 at 09:23:33AM -0800, Larry Wall wrote:
> Since -0.0 is a possible Num representation, that last one probably works.
> But @array[-0] probably doesn't, since Int probably doesn't represent -0,
Well, it might just be using 1's complement :-)
Nicholas Clark
Could we get a single-character symbol that could be used in an array
index to refer to its shape in a dwimmy way? Something like:
@x[*.head]
@x[*.tail] # equivalent to @x[*]
@A[*.head+2, *.tail-1]
(where head and tail are methods of the shape that return the current
dimension's start and en
Larry Wall wrote:
TSa wrote:
: Luke Palmer wrote:
: >When do we do integer/rational math and when do we do floating point math?
:
: Since we have now flooring semantics on modulus and division I wonder
: how the coercion of nums to ints takes place. Does it also use floor?
: E.g. is @array[-0.3]
On Tue, Jan 30, 2007 at 09:29:03PM +0100, TSa wrote:
: HaloO,
:
: [EMAIL PROTECTED] wrote:
: >+Alternately, C<*+0> is the first element, and the subscript dwims
: >+from the front or back depending on the sign. That would be more
: >+symmetrical, but makes the idea of C<*> in a subscript a little
HaloO,
[EMAIL PROTECTED] wrote:
+Alternately, C<*+0> is the first element, and the subscript dwims
+from the front or back depending on the sign. That would be more
+symmetrical, but makes the idea of C<*> in a subscript a little more
+distant from the notion of "all the keys", which would be a
Author: larry
Date: Tue Jan 30 13:11:37 2007
New Revision: 13552
Modified:
doc/trunk/design/syn/S09.pod
Log:
typo from [particle]++
Modified: doc/trunk/design/syn/S09.pod
==
--- doc/trunk/design/syn/S09.pod(o
HaloO Larry,
you wrote:
Num-to-Int autocoercion is an explicit exception built into the
language. Perl 5 programmars would lynch us if we broke it. But yes,
it's basically cheating.
In your array subscript reply you conceded that flooring
is better behaved than truncation. Which would mean t
Author: larry
Date: Tue Jan 30 12:31:16 2007
New Revision: 13551
Modified:
doc/trunk/design/syn/S09.pod
Log:
Braino spotted by TSa++
Modified: doc/trunk/design/syn/S09.pod
==
--- doc/trunk/design/syn/S09.pod(
On Tue, Jan 30, 2007 at 08:25:37PM +0100, TSa wrote:
: HaloO,
:
: [EMAIL PROTECTED] wrote:
: >+ The lower
: >+right corner of a two dimesional array is C<@array[*-1, *-1]>.
:
: That should read @array[*-1; *-1], or not?
Right you are. Though that makes me wonder if a multidimensional
Whatever (
HaloO,
[EMAIL PROTECTED] wrote:
+ The lower
+right corner of a two dimesional array is C<@array[*-1, *-1]>.
That should read @array[*-1; *-1], or not?
--
Author: larry
Date: Tue Jan 30 12:20:47 2007
New Revision: 13550
Modified:
doc/trunk/design/syn/S09.pod
Log:
Another idea for *+ vs *- in subscripts
Modified: doc/trunk/design/syn/S09.pod
==
--- doc/trunk/design/syn/
Author: larry
Date: Tue Jan 30 12:11:00 2007
New Revision: 13549
Modified:
doc/trunk/design/syn/S09.pod
Log:
Disabled negative subscript dwimmery for all shaped arrays.
* can now take + and - operators.
Modified: doc/trunk/design/syn/S09.pod
==
On Tue, Jan 30, 2007 at 06:02:59PM +0100, TSa wrote:
: How are coercions handled when calling functions?
:
: sub identity ( Int $i ) { return $i }
:
: my Num $x = 3.25;
:
: say indentity($x); # prints 3 or type error? Or even 3.25?
:
: I'm opting for type error on the footing that Int <:
On Tue, Jan 30, 2007 at 06:02:59PM +0100, TSa wrote:
: BTW, are character positions integers or can we have fractional
: characters on a higher unicode level that is a sequence of lower
: level chars?
Unfortunately this is a units problem where the units are not of
fixed length. StrPos is already
On Tue, Jan 30, 2007 at 06:02:59PM +0100, TSa wrote:
: Another integer issue is how the ++ and -- operators behave. Do they
: coerce to int before the operation or do they keep nums as nums?
: E.g.
:
: my $x = 3.25;
: $x++; # 4.25 or 4?
: $x = -2.25;
: $x--; # -3.25 or -4 or -3?
Since S
On Tue, Jan 30, 2007 at 06:02:59PM +0100, TSa wrote:
: HaloO,
:
: Luke Palmer wrote:
: >When do we do integer/rational math and when do we do floating point math?
:
: Since we have now flooring semantics on modulus and division I wonder
: how the coercion of nums to ints takes place. Does it also
Note: it would be good to break multiple questions into separate threads
with different subjects for those of us who use threaded mail readers,
so I will answer each of these with a different subject.
Larry
HaloO,
Luke Palmer wrote:
When do we do integer/rational math and when do we do floating point math?
Since we have now flooring semantics on modulus and division I wonder
how the coercion of nums to ints takes place. Does it also use floor?
E.g. is @array[-0.3] accessing the last element or is
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