[pmontra]

I agree with you. Pattern matching is detrimental to readability in this case. Everybody can understand your example above. The pattern matching one leaves me a little O_o (pun intended) despite I'm using pattern matching everyday in Elixir.

Sometimes boring code beats clever code.

[Someone]

I think that’s more a matter of familiarity than of readability proper. The same argument could have been made against Arabic numerals, against the use of “=“ for assignment and “==“ for equality (“=“ had been used in mathematics for equality for ¿centuries?), etc.

One could also argue that, by using the knowledge that “is divisible by 3 and 5” is equivalent to “is divisible by 15”, the code using %15 is cleverer than the example that just follows the problem description.