jurassic park quote confirmed?

doesn't this change the original array?

just a little smaller but sill super cool

Clever girl!

Why was this kata broken off from the other Count IP addresses kata? Why is it labeled as Ruby only? This looks to be a duplicate.

Added Haskell translation

Whoops, you're right. I had misread the intention of this section when writing this kata: RFC 6052 Section 2.2 https://tools.ietf.org/html/rfc6052#section-2.2

RFC 4291 Section 2.2 describes the 32 bits rule: https://tools.ietf.org/html/rfc4291#section-2.2

I've removed the invalid test case.

2002::150.0.0.1:2 and 2002::150.0.0.1:1 are not valid IPv6 numbers, only final 32 bits of IPv6 addres can be IPv4 style dotted quad.

Try using foldr and without reimplementing reverse - it's tricky, but loads of fun!

Returning nil from a method which clearly should return either false or true can lead to bugs. E.g. alphanumeric?(s) == false wouldn't work as expected.

you like difficult ways, don`t you?

when the url is "http://www.china.com.cn", what do you think you will get?
the answer is com, so this answer is not reliable.

Was a wrong test-case, fixed (better late than never)

Very nice.

oh....