In https://rosettacode.org/wiki/FizzBuzz there's a nice Raku implementation, with ever-more-compact varieties following.

It seems like a really nice language but which niche should it occupy?

Edited to add, now that I'm at a computer:

  for 1 .. 100 {
    when $_ %% (3 & 5) { say 'FizzBuzz'; }
    when $_ %% 3       { say 'Fizz'; }
    when $_ %% 5       { say 'Buzz'; }
    default            { .say; }
  }

The multi sub version is interesting. I'm not quite sure what multi subs are, they seem to be performing a pre-function-call validation to choose which sub to use?

  multi sub fizzbuzz(Int $ where * %% 15) { 'FizzBuzz' }
  multi sub fizzbuzz(Int $ where * %%  5) { 'Buzz' }
  multi sub fizzbuzz(Int $ where * %%  3) { 'Fizz' }
  multi sub fizzbuzz(Int $number        ) { $number }
  (1 .. 100)».&fizzbuzz.say;