On Sun, Aug 16, 2020 at 9:03 AM Ralph Mellor wrote:
> The SO you quote includes an operator. So that's not the problem.
>
> The SO is written by jnthn. It doesn't get more authoritative than that.
That's good to know, although for me the difference between it working
and not working (with that e
Hi,
I'm using the technique described in this thread
https://stackoverflow.com/questions/61179586/use-haskell-like-prelude-modules-in-a-module-in-raku
to re-export module sub-trees in a project. One of these re-export
modules also exports an infix operator. The others only export classes
and roles
Hi,
I'd like to add some example modules to a Raku module I'm working on.
These are not strictly tests, nor stand-alone scripts, but modules of
compilable code that show suggested ways to use the roles and classes
in the module. They're not strictly needed to make use of the module.
I can see I c
On Wed, Aug 12, 2020 at 8:12 AM Tobias Boege wrote:
> [...]
> > Would a custom version of the trait_mod: routine do the trick?
>
> Yes:
>
> multi trait_mod: (Routine $r, :$equivalence!) {
> trait_mod:($r, :equiv(&infix:<==>));
> trait_mod:($r, :assoc);
> }
As a supplementary ques
On Wed, Aug 12, 2020 at 8:12 AM Tobias Boege wrote:
> > I'm working with roles where the mixing-in classes and roles need to
> > have some mixin-specific notion of equality. So I have an Equality
> > role that can also be
> > mixed in as needed:
> >
> > role Equality {
> > method equal(Equality
Hi,
I'm working with roles where the mixing-in classes and roles need to
have some mixin-specific notion of equality. So I have an Equality
role that can also be
mixed in as needed:
role Equality {
method equal(Equality:D) of Bool:D {...}
}
To make using the role easier I've created an infix o
Hi,
I'm creating some Raku roles that model algebraic structures:
role AddMagma {
method add(AddMagma:D, AddMagma:D) of AddMagma:D {...}
}
role AddSemigroup does AddMagma {
multi method add-associativity(AddSemigroup:D \x, AddSemigroup:D \y)
of Bool:D {
self.add(x.add(y)) == (self.add(x)
Hi,
I'm a complete Raku novice and I'm still at the stage of understanding
how the major language features are used idiomatically.
As an exercise I'd like to do the equivalent of Haskell's typeclass
implementation for the built in numeric types. I understand this may
well be a misguided exercise
