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 -- Peter Pentchev r...@ringlet.net r...@debian.org p...@storpool.com PGP key: http://people.FreeBSD.org/~roam/roam.key.asc Key fingerprint 2EE7 A7A5 17FC 124C F115 C354 651E EFB0 2527 DF13
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