On Tue, Aug 25, 2020 at 2:31 PM Andy Bach <[email protected]>
wrote:
> Pretty cool - I didn't know about the bare "$" as a magic state var.
>
They can be pretty great, especially when combined with the magic op=
operators that (in essence) know about identity elements. I've done a few
challenges on the Code Golf Stackexchange site where I wanted an infinite
sequence like this:
0, 1, -2, 3, -4, 5, -6, ...
It took me a while to realize this can be expressed in Raku simply as:
{ $++ * ($ *= -1) } ... *
