Inside of a regex `{…}` will just run some regular Raku code.
Code inside of it will most likely have no effect on what the regex matches.
What you should have written was:
$<sol> = "@W[3]"
The thing you were thinking of was:
$<sol> = <{ @W[3] }>
Which could have been written as:
<sol={ @W[3] }>
---
To have the result of regular Raku code have an effect on the match, it has
to have <…> around it
'TrueFalse' ~~ / <{ Bool.pick }> /
I think it is better if you use "…" if you are just interpolating a
variable, because that is something you might do outside of a regex as well.
---
The reason your code matched is that an empty regex always matches.
'abc' ~~ / "" /
'abc' ~~ / {} /
'abc' ~~ / {'def'} / # still an empty regex as far as the regex engine
is concerned
On Sat, Jun 13, 2020 at 5:35 AM Richard Hainsworth <rnhainswo...@gmail.com>
wrote:
> I was playing with a regex and array interpolation.
>
> From the documentation I thought the following comparisons would be the
> same, but they are not.
>
> What am I missing?
>
> my @W = <perl weekly challenge with some extra things>;my $S =
> 'perlchallengeextrathingswithweeklysome' ; # randomly concatenate the words
> without spacessay 'yes' if $S ~~ / $<sol>=( { @W[3] } ) /;say $<sol>;my $sol
> = @W[3]; # withsay 'yes' if $S ~~ / $<sol>=( $sol ) /;say $<sol>;
>
> <response>
> yes
> ｢｣
> yes
> ｢with｣
>
>
>
>
>
