$ by itself is an anonymous variable, putting ++ after starts it at 0 (hmm or nil?) and increments up.
By putting the plus plus first, ++$, it will start at 1, thanks to pre-increment versus post increment On Mon, Aug 31, 2020, 4:20 PM ToddAndMargo via perl6-users < perl6-us...@perl.org> wrote: > On 2020-08-31 05:53, Brian Duggan wrote: > > On Monday, August 24, Curt Tilmes wrote: > >> $ cat Lines.txt | raku -e '.say for lines()[3,2,5]' > > > > The -n flag is an option here too: > > > > raku -ne '.say if $++ == 3|2|5' Lines.txt > > > > Brian > > > > Hi Bill, > > Works beatifically! And no bash pipe! > > $ raku -ne '.say if $++ == 3|2|5' Lines.txt > Line 2 > Line 3 > Line 5 > > What is `$++`? > > -T >
