You can override WHAT with a method, you just have to use a syntax
that's not literally .WHAT, like this:
class Test { method WHAT() { say "i'm here" } }; Test."WHAT"();
# → i'm here
Ah, OK, you didn't mean override WHAT itself, but get an ersatz what in
some other way. Got it. Thanks.
El mar., 12 jun. 2018 a las 21:32, Brad Gilbert ()
escribió:
> On Tue, Jun 12, 2018 at 2:16 PM, JJ Merelo wrote:
> > This is what the documentation says: https://docs.perl6.org/syntax/WHAT
>
On Tue, Jun 12, 2018 at 2:16 PM, JJ Merelo wrote:
> This is what the documentation says: https://docs.perl6.org/syntax/WHAT
> You can override it, but we'll pay no attention anyway, basically. So you
> can't achieve it otherwise, I guess.
It is easy to achieve.
sub user-made-what ( ::Type )
This is what the documentation says: https://docs.perl6.org/syntax/WHAT
You can override it, but we'll pay no attention anyway, basically. So you
can't achieve it otherwise, I guess.
El mar., 12 jun. 2018 a las 21:14, JJ Merelo ()
escribió:
>
>
> El mar., 12 jun. 2018 a las 21:11, Brandon
I should clarify this, but I'm not recalling full details at the moment
which is why I didn't originally.
Perl uses a metaobject protocol (MOP, which you'll see in various places in
the docs). The "macro" to access the metaobject is the .HOW pseudo-method.
If you do this for a normal class or
El mar., 12 jun. 2018 a las 21:11, Brandon Allbery ()
escribió:
> I should clarify this, but I'm not recalling full details at the moment
> which is why I didn't originally.
>
> Perl uses a metaobject protocol (MOP, which you'll see in various places
> in the docs). The "macro" to access the
El mar., 12 jun. 2018 a las 21:01, Brandon Allbery ()
escribió:
> .WHAT is a "macro"/shorthand, which is why it's uppercase. There's a
> metamodel (the real meaning of the ^) version of it as well.
>
Right. From here: https://docs.perl6.org/language/operators#postfix_.^
^method calls method
.WHAT is a "macro"/shorthand, which is why it's uppercase. There's a
metamodel (the real meaning of the ^) version of it as well.
On Tue, Jun 12, 2018 at 2:59 PM Joseph Brenner wrote:
> >> say @y.^WHAT
>
> > If you want to print the name use `.^name`.
>
> > If you want the type object for more
>> say @y.^WHAT
> If you want to print the name use `.^name`.
> If you want the type object for more advanced usages use `.WHAT`.
Sorry, typo on my part.
Though that raises another syntactic oddity I might whine about: perl6
code examples frequently use ".WHAT". I was interested in getting a
Hi,
El mar., 12 jun. 2018 a las 20:35, Brad Gilbert ()
escribió:
> On Tue, Jun 12, 2018 at 12:55 PM, Joseph Brenner
> wrote:
> > Thanks, both your suggestion and JJ Merelo's work, but I think I like
> > yours for readability:
> >
> > # # using binding, suggested by JJ Merelo
> > # my @y :=
On Tue, Jun 12, 2018 at 12:55 PM, Joseph Brenner wrote:
> Thanks, both your suggestion and JJ Merelo's work, but I think I like
> yours for readability:
>
> # # using binding, suggested by JJ Merelo
> # my @y := @x but LookInside;
>
> # suggested by Elizabeth Mattijsen l...@dijkmat.nl
>
Please check this https://github.com/perl6/doc/commit/f6df30a8fc
It's going to be soon in the docs (they are updated every 5 minutes if
there are changes), however a general discussion of when to use "but" and
when to use "does" is still missing. I'm working towards it in this page
I have added this to the documentation:
https://github.com/perl6/doc/commit/ddd101b089
I'll add also Liz's example to make it even clearer. Or maybe a link if it
does not belong in that section. I'll see what's best.
JJ
Thanks, both your suggestion and JJ Merelo's work, but I think I like
yours for readability:
# # using binding, suggested by JJ Merelo
# my @y := @x but LookInside;
# suggested by Elizabeth Mattijsen l...@dijkmat.nl
my @y does LookInside = @x;
I actually found the use of "but" in the
El mar., 12 jun. 2018 a las 19:07, Brandon Allbery ()
escribió:
> That was not "also", that was "this is the right way". "Ask questions in
> StackOverflow whenever possible" does not leave room for "this is also a
> good venue", it asserts that there is one proper venue and others are
>
> Use binding:
>
> my @x= <1 2 3>; my @y := @x but Iterable; say @y.^name; # OUTPUT:
> «Array+{Iterable}»
Hm... the docs on objects has this example:
https://docs.perl6.org/language/objects
role R { method Str() {'hidden!'} };
my $i = 2 but R;
sub f(\bound){ put bound };
f($i); #
Smileys do not change "use … whenever possible". It;s still asserting there
is one correct way to contribute.
On Tue, Jun 12, 2018 at 1:07 PM Curt Tilmes wrote:
>
> On Tue, Jun 12, 2018 at 12:56 PM Brandon Allbery
> wrote:
>
>> Which doesn't change the fact that there's what amounts to an
>>
On Tue, Jun 12, 2018 at 12:56 PM Brandon Allbery
wrote:
> Which doesn't change the fact that there's what amounts to an
> accessibility issue.
>
> Do you *really* want to tell some percentage of people that they must be
> willing to use the One True Web Site, or else go away because they're not
That was not "also", that was "this is the right way". "Ask questions in
StackOverflow whenever possible" does not leave room for "this is also a
good venue", it asserts that there is one proper venue and others are
discouraged.
It asserts that, for people who have difficulty using StackOverflow
Hi
El mar., 12 jun. 2018 a las 18:56, Brandon Allbery ()
escribió:
> Which doesn't change the fact that there's what amounts to an
> accessibility issue.
>
> Do you *really* want to tell some percentage of people that they must be
> willing to use the One True Web Site, or else go away because
Which doesn't change the fact that there's what amounts to an accessibility
issue.
Do you *really* want to tell some percentage of people that they must be
willing to use the One True Web Site, or else go away because they're not
wanted hereabouts? Because insisting all the time that "(also: ask
El mar., 12 jun. 2018 a las 18:34, Brandon Allbery ()
escribió:
> You really do want to be exclusionary, don't you?
>
> yada yada stackoverflow is the one truth yada yada.
>
Well, it really helps newcomers to find answers to their problems. It's
well indexed, and it also raises visibility of the
You really do want to be exclusionary, don't you?
yada yada stackoverflow is the one truth yada yada.
Enough.
On Tue, Jun 12, 2018 at 3:12 AM JJ Merelo wrote:
> (also: ask questions in StackOverflow whenever possible :-) )
>
> El mar., 12 jun. 2018 a las 9:09, JJ Merelo ()
> escribió:
>
>>
> On 12 Jun 2018, at 09:06, Joseph Brenner wrote:
>
> I thought this would work to make a copy of @x but with the role
> "LookInside" attached to it:
>
> my @y = @x but LookInside;
>
> But that didn't add the role to @y. E.g.
>
> say @y.^WHAT
>
> Would just report (Array), not
(also: ask questions in StackOverflow whenever possible :-) )
El mar., 12 jun. 2018 a las 9:09, JJ Merelo () escribió:
> Use binding:
>
> my @x= <1 2 3>; my @y := @x but Iterable; say @y.^name; # OUTPUT:
> «Array+{Iterable}»
>
> El mar., 12 jun. 2018 a las 9:06, Joseph Brenner ()
> escribió:
>
Use binding:
my @x= <1 2 3>; my @y := @x but Iterable; say @y.^name; # OUTPUT:
«Array+{Iterable}»
El mar., 12 jun. 2018 a las 9:06, Joseph Brenner ()
escribió:
> I thought this would work to make a copy of @x but with the role
> "LookInside" attached to it:
>
>my @y = @x but LookInside;
>
26 matches
Mail list logo
