Re: What are values with : called?

ToddAndMargo wrote:

> my Proc $p = run( |@args, :err, :out );
> 
> What are the values with the ":" in front of them
> officially called? I take it "thingies with the
> colon in front of them" does not cut it.

They're colon-pairs, though you'll also see them called "adverbs" depending on context.
You could call them adverbs here-- they're flags that turn on different behavior for the output.

  https://docs.raku.org/routine/run

    If you want to capture standard output or error instead of having
    it printed directly you can use the :out or :err arguments, which
    will make them available using their respective methods: Proc.out
    and Proc.err.


       my $proc = run 'echo', 'Raku is Great!', :out, :err;
       $proc.out.slurp(:close).say; # OUTPUT: «Raku is Great!␤»
       $proc.err.slurp(:close).say; # OUTPUT: «␤»


You could see a construct like that used with an argument though, in
which case it's an "adverbial pair":

  https://docs.raku.org/syntax/Adverbial%20Pair


Adverbs get used a lot with regular expressions, where the syntax is different:

  https://docs.raku.org/syntax/Regex%20adverbs