No, that's not it either. words is "split at whitespace until you've made $limit chunks". It doesn't know or care what you do afterward with the Seq. And the [] are afterward, they apply to the Seq, not to words() which doesn't even know about them.
On Wed, Sep 26, 2018 at 5:19 PM ToddAndMargo <toddandma...@zoho.com> wrote: > >> On Wed, Sep 26, 2018 at 2:57 AM Todd Chester <toddandma...@zoho.com > >> multi method words(Str:D $input: $limit = Inf --> Positional) > > > On 9/26/18 7:21 AM, Brandon Allbery wrote: > > > $limit sets a limit on how many words it will make. Inf means there's no > > limit. Your assumption that it must be some kind of array index doesn't > > make a lot of sense; this doesn't index at all, it splits at whitespace > > until it's got the number of chunks you told it to make, indexing the > > result is your problem. Small pieces of functionality, not "god > > functions" that try to do everything you can possibly think of. > > Hi Brandon, > > So, "$limit = Inf" means that I can put an infinite number of > stuff in the [] or () > > p6 '"a b c d e".words(3)[2,4].say;' > (c Nil) > > $ p6 '"a b c d e".words(3).say;' > (a b c) > > > I really think that could be written better. > > First off the parameter is not a "limit". It is > a selection. > > And second, "Inf" is a "type", meaning "infinity" or larger > than Perl's memory allocation can handle. It is confusing > to use it to state that there can be any number of selections > in the parameter. > > $ p6 '"a b c d e".words()[2,4,1,3,3,3,3,20].say;' > (c e b d d d d Nil) > > It also does not tell that the parameter(s) is/are integers > or what happens if you supply a sting (error) or a real (it > truncates): > > $ p6 '"a b c d e".words()["a"].say;' > Cannot convert string to number: base-10 number must begin > with valid digits or '.' in '⏏a' (indicated by ⏏) > in block <unit> at -e line 1 > > $ p6 '"a b c d e".words()[ 2.5 ].say;' > c > > Third, it does not state the difference between using () and []. > Or how to mix and match them. > > $ p6 '"a b c d e".words(3).say;' > (a b c) > > Where (3) gives you the first three words > > -T > -- brandon s allbery kf8nh allber...@gmail.com
