Remember within the few days people sent you links to read more about signatures? Go read them, then re-ask any remaining questions.
I can cut/paste bits from them them under each of your questions, but it would really be better for you to just read the existing docs and try to understand signatures more holistically. https://opensource.com/article/18/9/signatures-perl-6 https://docs.perl6.org/type/Signature https://perl6advent.wordpress.com/2013/12/21/day-21-signatures/ and some videos: https://vimeo.com/42051800 https://www.youtube.com/watch?v=obYlOurt-44 On Tue, Oct 2, 2018 at 8:14 PM ToddAndMargo <toddandma...@zoho.com> wrote: > Hi All, > > I use postcircumfix [] all the time. But I don't > understand the documentation. > > https://docs.perl6.org/routine/[%20]#language_documentation_Operators > <https://docs.perl6.org/routine/%5B%20%5D#language_documentation_Operators> > > would someone please explain what the crypto line means: > > sub postcircumfix:<[ ]>(@container, **@index, > :$k, :$v, :$kv, :$p, :$exists, :$delete) > > 1 Why the <[]>? I have always used [] with out the <>. > Why would I want to use one over the other? > > 2) Where does it state that the <> is optional? > > 3) What is a **@? *@ is a slurp all remaining. A > super duper slurp? > > 4) What is :$k, :$v, :$kv, :$p, :$exists, :$delete > and where are they defined? > > 5) Why does :$k, :$v, :$kv, :$p, :$exists, :$delete > have colons in front of them? > > 6) Where is the --> return described? > > Yours in confusion, > -T >
