Digit factorials
Author: Quinn Perfetto
https://projecteuler.net/problem=34
145 is a curious number, as 1! + 4! + 5! = 1 + 24 + 120 = 145.
Find the sum of all numbers which are equal to the sum of the factorial of their digits.
Note: as 1! = 1 and 2! = 2 are not sums they are not included.
Source code: prob034-quinny.pl
use v6; sub fact ($n) { [*] 1..$n; } sub factDigits ($n is copy) { [+] gather while $n > 0 { take fact $n % 10; $n div= 10; } } say [+] gather for 3...40586 { take $_ if factDigits($_) == $_ }