Posted by milahu on 10/11/22 11:45

Heh, nice solution! :)

The 1st statement checks, if $num is a number.

The 2nd one checks, if the the binary "one" is set, as it is with every
odd number.
Alternatively, you could use modulo:
!($num % 2)

IMO, the most odd thing about this is the single "&" between the two
statements; I would use "&&" or "and" here. ;)

Cheers..

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