On Thu, Aug 24, 2000 at 03:40:00PM -, Perl6 RFC Librarian wrote:
> This and other RFCs are available on the web at
> http://dev.perl.org/rfc/
>
> =head1 TITLE
>
> Case ignoring eq and cmp operators
IMHO this problem is better solved by using =~ and its brethren,
which already allow you to
David L. Nicol writes:
> If we use exceptions of some kind to handle
> syntax, encountering an exception of type "unknown-keyword:Cmp" could
> result in the subroutine definition getting run to clarify this piece
> of code.
I'm nervous about this. I'm trying to picture what happens, and
having t
Last week when I wrote "everything is an exception" this is what
I was talking about.
Nathan Torkington wrote:
> This raises another issue, though:
>
> You'd obviously want to have a module that collected together your
> favourite new operators. But if they were lexically scoped, they'd
>
Perl6 RFC Librarian wrote:
> =head1 IMPLEMENTATION
>
> Probably has to be added to perl internals...
>
> I wonder what will happen with overloads though - is eq/i a new operator
> to overload or is the case-insensitivity somehow magically done by the
> Perl interpreter even though eq was overl
Dan Sugalski writes:
> Personally I think I'm in favor of Nat's suggestion of allowing the
> definition of new infix operators and let this be taken care of in a
> module, but that's just passing the buck. (Not that it's a bad strategy,
> mind... :)
Solve the generic problem, not a specific on
On Thu, 24 Aug 2000, Nathan Torkington wrote:
> You'd obviously want to have a module that collected together your
> favourite new operators. But if they were lexically scoped, they'd
> be lexically scoped to the module they were defined in, i.e. your
> collection rather than your main program.
At 02:09 PM 8/24/00 -0400, John Porter wrote:
>Markus Peter wrote:
> >
> > Another possibility would be to use cmpi and eqi
>
>Actually, all we need is cmpi, since eqi is just !cmpi.
>(And eq is !cmp.)
Nope. Read the manual.
---
Ma
Bart Lateur wrote:
>
> Suppose you want to keep the case on the hash keys, because you
> enumerate them. But you still want to find hash entries in a case
> insensitive manner...
...then you simply reach for Tie::CPHash on CPAN!
--
John Porter
On Thu, Aug 24, 2000 at 10:28:51PM +0200, Bart Lateur wrote:
> On 24 Aug 2000 15:40:00 -, Perl6 RFC Librarian wrote:
>
> >Perl currently only has C and C operators which work case-sensitively.
> >It would be a useful addition to add case-insensitive equivalents.
>
> Next you'll want case)ins
On 24 Aug 2000 15:40:00 -, Perl6 RFC Librarian wrote:
>Perl currently only has C and C operators which work case-sensitively.
>It would be a useful addition to add case-insensitive equivalents.
Next you'll want case)insensitive hashes! Er... actually, that sounds
rather useful, even more tha
At 11:33 AM 8/24/00 -0600, Tom Christiansen wrote:
> >While I don't know that I'd argue in favor of this feature request, your
> >argument against misses the mark here. It's saying, essentially, that the
> >difference between "P" and "p" is the same as the difference between -1 and
> >1. That, as
Yes, these all sound useful! Damian, could you make sure they get included
in your switch statement?
And don't forget
=:=
which should compare lazy, infinite sublists, as in
if ( 4..:2 =:= 2 * ( 2.. )) { ... }
Jarkko Hietaniemi wrote:
> I want four special new comparison operator
Markus Peter wrote:
>
> Another possibility would be to use cmpi and eqi
Actually, all we need is cmpi, since eqi is just !cmpi.
(And eq is !cmp.)
--
John Porter
if ( abs($a cmp $b) cmp abs($b cmp $a) ) ...
We need a way to mix eq, the things to be compared, and the operation
to be done on them before they are compared:
lc{ $foo eq $bar }
$foo eq (lc) $bar
$foo eq{lc} $bar
None of those are like any existing syntax in Perl. The current way:
lc($foo) eq lc($bar)
seems fine in compari
>In my consideration, a
>case-insensitive equality check is a rather common operation in Perl
>programs so it deserves its own operator.
That doesn't folllow. We already have a trivial and very obvious
way of doing it that doesn't require that any one learn anything
new that they don't already
>While I don't know that I'd argue in favor of this feature request, your
>argument against misses the mark here. It's saying, essentially, that the
>difference between "P" and "p" is the same as the difference between -1 and
>1. That, as they say, turns out not to be the case.
>The upper and
--On 24.08.2000 10:56 Uhr -0600 Tom Christiansen wrote:
>> The probably worst about these statements is that they look ugly.
>
> To the contrary: in the case (ahem) of the application of lc() on
> the comparison's operand, they look especially beautiful.
Depends on taste I guess...
>
>> Also,
I want four special new comparison operators.
Firstly,
" e q "
That is, an operator that ignores any leading, any trailing, and treats
all intraspace as equivalent. If the embedded space is confusing, I may
consider suggesting an operator modifier, "/ ".
Secondly,
Eq,
which
At 10:56 AM 8/24/00 -0600, Tom Christiansen wrote:
> >Also,
> >they further complicate statements and they are counter-intuitive for
> >beginners - why should I change the case of variables if I only want
> >to compare them?
>
>Again, I reach the contrary conclusion: they say exactly what they
>ar
>Case ignoring eq and cmp operators
>=head2 Problems with current ways to do it
>Perl currently knows basically two methods for checking of equality of
>strings case-insensitively:
> uc($a) eq uc($b)
> $a =~ /^$b$/i
>and for comparing them one:
> uc($a) cmp uc($b)
>The probably worst about t
>Perl currently only has C and C operators which work
>case-sensitively.
>It would be a useful addition to add case-insensitive equivalents.
I think this is an excellent idea. I personally would find it very useful.
> $a eq/i $b
> $a cmp/i $b
>
>This still leaves some room for future additi
On Thu, Aug 24, 2000 at 03:40:00PM -, Perl6 RFC Librarian wrote:
> This and other RFCs are available on the web at
> http://dev.perl.org/rfc/
>
> =head1 TITLE
>
> Case ignoring eq and cmp operators
>
> =head1 VERSION
>
> Maintainer: Markus Peter <[EMAIL PROTECTED]>
> Date: 24 Aug 200
This and other RFCs are available on the web at
http://dev.perl.org/rfc/
=head1 TITLE
Case ignoring eq and cmp operators
=head1 VERSION
Maintainer: Markus Peter <[EMAIL PROTECTED]>
Date: 24 Aug 2000
Version: 1
Mailing List: [EMAIL PROTECTED]
Number: 143
=head1 ABSTRACT
Perl curre
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