Methodicals: A better way to monkey type

(The following describes a proposed extension to Perl 6, methodical scoped operators or methodicals for short. It is written in the present tense for simplicity but should be understood as the future conditional.) Normally, when you write a method call, the definition of the method is entirely in

Re: Methodicals: A better way to monkey type

On Wed, Apr 21, 2010 at 12:35:11PM -0300, Daniel Ruoso wrote: > Em Qua, 2010-04-21 às 00:16 -0700, Stefan O'Rear escreveu: > > Normally, when you write a method call, the definition of the method is > > entirely in the domain of the receiver's class: > > $object

Re: optional rules cluttering parse trees

On Tue, Apr 27, 2010 at 06:31:01AM +0200, Stéphane Payrard wrote: > When doing an analyse of a sample parse tree, I note that it is > cluttered by the reduction of optional subrules > to generate a zero length parse subtree. That is, rules with a '?' > quantifier matching zero time. > Suppressing

Re: r31082 -[S32/Str] rethinking of tab characters

On Thu, Jun 03, 2010 at 03:52:02PM +0200, pugs-comm...@feather.perl6.nl wrote: > Author: masak > Date: 2010-06-03 15:52:01 +0200 (Thu, 03 Jun 2010) > New Revision: 31082 > > Modified: >docs/Perl6/Spec/S32-setting-library/Str.pod > Log: > [S32/Str] rethinking of tab characters > > Also added a

Re: r31082 -[S32/Str] rethinking of tab characters

On Thu, Jun 03, 2010 at 07:00:17PM +0200, Carl Mäsak wrote: > sorear (>): > > 2. Indenting a blank line results in a blank line, not a line with only > >   whitespace. > > What about indenting a line with only whitespace? Implementor's choice; it won't come up in the viv port. > I think I can se

Re: Reversible grammars

On Sat, Jun 05, 2010 at 09:19:01AM +1000, Timothy S. Nelson wrote: > Hi. I've been thinking more about reversible grammars. Specifically, > I'm wondering if the following pseudo-code will be possible: > > ## Match a grammar here > $match = Grammar.match($text) > ## Need some code here to

Re: Announce: Rakudo Perl 6 development release #30 ("Kiev")

On Thu, Jun 17, 2010 at 04:55:38PM -0700, Darren Duncan wrote: > So, is "Rakudo Star" meant to be a parallel release series, sort of like > Perl 5.12.x vs 5.13.x are now, or are the monthly Rakudo releases we've > been seeing going to be named "Star" at some point? I thought I read > recently t

Re: Breaking encapsulation by detaching a private-variable-accessing method from one object and calling it on another

On Sat, Jul 31, 2010 at 08:23:29PM +0200, Carl Mäsak wrote: > * It has been decided that attribute slots of the type $!foo are only > allowed *syntactically* within the class block that declares them. > (The exception to this, I guess, is the 'trusts' directive.) But this > means that something lik

Re: Breaking encapsulation by detaching a private-variable-accessing method from one object and calling it on another

On Sat, Jul 31, 2010 at 02:36:02PM -0400, Brandon S Allbery KF8NH wrote: > On 7/31/10 14:23 , Carl Mäsak wrote: > > a. Allow this form of encapsulation breakage. > > b. Disallow detaching of certain methods. > > c. Disallow attaching of certain anonymous methods. > > > > I must confess I don't par

Re: Ruby Fibers (was: threads?)

On Fri, Oct 15, 2010 at 01:42:06PM +0200, Leon Timmermans wrote: > On Wed, Oct 13, 2010 at 1:20 AM, Tim Bunce wrote: > > I've not used them, but Ruby 1.9 Fibers (continuations) and the > > EventMachine Reactor pattern seem interesting. > > Continuations and fibers are incredibly useful and should

Re: IO Multiplexing

On Thu, Nov 11, 2010 at 05:47:46PM -0800, Ben Goldberg wrote: > I would like to know, is perl6 going to have something like select > (with arguments created by fileno/vec), or something like IO::Select > (with which the user doesn't need to know about the implementation, > which happens to be done

Re: Packed arrays and assignment vs binding

On Sat, Nov 13, 2010 at 06:09:00PM +0100, Jonathan Worthington wrote: ... > With packed arrays, however, I'm less clear what they mean. Since > the point of a packed array is compact storage, there's no chance to > actually have containers. Thus does assignment to a slot in a > compact array ever m

Re: IO Multiplexing

On Fri, Nov 12, 2010 at 06:59:59PM -0800, Ben Goldberg wrote: (snip plea to paint the bikeshed fuchsia) The design of the I/O system will be chosen by the first person to implement it. If you want any say in the matter, you need to be that person. Bonus points if you also port at least one app t

Enumerating prefix operators, and spec changes

[In response to a comment on perl6-compiler, in the thread "[perl #85746] spec/S29-context/sleep.t is way too relax"] On Wed, Mar 09, 2011 at 12:31:34PM -0600, Patrick R. Michaud wrote: > While researching this ticket, I notice that S29 has a C > function defined (line 246); this seems to be in c

Re: eval should throw an exception on compile error

On Sat, May 07, 2011 at 03:45:02PM +1000, Michael G Schwern wrote: > I was just playing around with eval, trying to figure out if you can define an > operator overload at runtime (seems you can't, good) and noticed this in the > spec... [1] > > "Returns whatever $code returns, or fails." > >

eval and try should be separate

I intend to change the definition of "eval" such that it does not catch exceptions. String eval's role as the catcher of exceptions is a legacy of Perl 1, which had no block eval, and I feel it has no place in Perl 6. The exception catching and associated unwinding makes it impossible to use resu

Re: Encapsulating the contents of container types

On Thu, Aug 18, 2011 at 04:06:47PM +0200, Carl Mäsak wrote: > I was working on the Little Animal Farm game yesterday, and wanted to > make it totally safe against tampering from the outside. (See > .) > > I ended up implementing a cus

Re: Operator precedence fiddling

On Fri, Dec 23, 2011 at 10:59:58PM +1100, Kris Shannon wrote: > sub infix: ($a, $b = ($a foo 2 * 3 - $a)) is tighter(&infix:<*>) > { > $a == 0 ?? 1 foo 2 * 3 !! $a + $b > } > > say 1 foo (2 * 3); > # 7 > say (1 foo 2) * 3; > # 9 > > say 1 foo 2 * 3; > # 9 > > say infix:(1); > # Niecza: 7 >

Re: N-dimensional arrays and compiler support

On Thu, Mar 22, 2012 at 11:14:54PM +0100, Daniel Carrera wrote: > Hey, > > I have a few slightly related questions: > > 1. The semicolon operator would allow Perl 6 to support N-dimensional > arrays... How would one iterate over that type of array? > > my num @matrix[ 10 ; 10 ; 10 ]; > > I ask bec

Re: How to make a new operator.

On Sat, Mar 24, 2012 at 06:16:58PM -0700, Jonathan Lang wrote: > IMHO: if we're going to take loss of precision into account, we should do so > explicitly. I'm a bit rusty, so forgive me if I misuse the terminology: if a > number has an epsilon, the epsilon should be attached to it as a trait so

Re: Rewrite of S21

On Fri, Nov 23, 2012 at 03:24:00PM +0100, Arne Skjærholt wrote: > Hi all. > I have rewritten S21 so that Zavolaj/NativeCall is spec. S21 as of > right now is probably the most thorough documentation of the current > state of NativeCall. > > Most of the basic functionality is fairly stable I think,