The problem is that often adverbs are chained without a comma.

    my %h = (a => 1);

    %h{'a'}:exists:delete # True
    say %h.keys; # ()

---

    my %h = (a => 1);

    postcircumfix:< { } >( %h{'a'}, :exists:delete ) # True
    say %h.keys; # ()

On Wed, Aug 26, 2020 at 7:31 AM Marcel Timmerman <mt1...@gmail.com> wrote:

> Hi everyone,
>
> I was experimenting with extended identifiers and found that it is not
> possible to use it in named attributes. E.g.
>
> > sub a (:$x:y) { say $x:y; }
> ===SORRY!=== Error while compiling:
> Unsupported use of y///.  In Raku please use: tr///.
> ------> sub a (:$x:y⏏) { say $x:y; }
>
>
> > sub a (:$abc:def) { say $abc:def; }
> ===SORRY!=== Error while compiling:
> Invalid typename 'def' in parameter declaration.
> ------> sub a (:$abc:def⏏) { say $abc:def; }
>
>
> Is there a trick of some sort to get this done? At the moment I can only
> use a slurpy hash and check for its keys. This is good enough for me but
> out of curiosity I ask. If not possible, an extra note in the documentation
> on named arguments would be necessary.
>
> regards,
> Marcel
>
>
>

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