On 2020-06-04 00:08, Peter Pentchev wrote:
On Wed, Jun 03, 2020 at 07:00:53PM -0700, ToddAndMargo via perl6-users wrote:
On 2020-06-03 02:21, Peter Pentchev wrote:
On Wed, Jun 03, 2020 at 01:06:33AM -0700, ToddAndMargo via perl6-users wrote:
On 2020-06-02 22:15, Peter Pentchev wrote:
On Tue, Jun 02, 2020 at 07:39:16PM -0700, ToddAndMargo via perl6-users wrote:
On 2020-06-01 23:02, Peter Pentchev wrote:
https://docs.raku.org/language/classtut
Error 522 Ray ID: 59d609616954eb79 • 2020-06-03 02:38:12 UTC
Connection timed out
Poop!
This is usually some kind of temporary error - something broke down
between your computer and the server. Try again later, it might work.
(it's the Raku docs site, you've used it before, you know it usually
works :)
G'luck,
Peter
Hi Peter,
It is working now. Thank you.
You would happen to know of a tutorial. Me and
the documents ... well, lets say they are not
written with the same outcome in mind as perldocs.
Is there a way to write a methods as I would write
a sub and avoiding the class thing?
OK, now I really have to ask, just like other people have.
What exactly do you mean by "method"?
G'luck,
Peter
say "AbCd".lc
abcd
lc would be the method:
multi method lc(Str:D: --> Str:D)
Right. So apart from the & trick that Fernando Santagata showed you (but
see below, it's not really calling a method) and that is neat but has
its drawbacks (like for instance you cannot ask an object if it .can()
do a specific method), you want to call a method on an object.
In general, and the point of this subthread is, methods are not
standalone subroutines; they are defined as part of the whole "variables
have types, those types are called classes, each class defines
the methods that you may call on its variables" object-oriented
programming thing. When you say "method", this is what people think
you're talking about, because, well, this is what "method" kind of means
when one uses it in a conversation about computer programming,
especially when talking about a language with a class-, role-, and
inheritance-based type system.
The trick that Fernando showed you is not really calling a method;
it is a cute way of the Raku syntax to specify the first argument when
calling a subroutine. The subroutine is not a method, it does not show
up in .can() or .^methods or .HOW or any of the way to ask a variable
what methods it supports. Yes, it is possible to define a multi sub that
does different things when called on different types of first argument,
but it is still not a method, it is a subroutine.
A method is something that is tied to a class. For a quick overview of
classes, methods, and the main ideas of object-oriented programming, try
https://www.freecodecamp.org/news/object-oriented-programming-concepts-21bb035f7260/
Also, take another look at https://docs.raku.org/language/classtut -
especially the part "Starting with a class" and onwards.
G'luck,
Peter
Thank you. I gots some reading in my future
