In this case it would be more correct to use if else or just if lighting, since the switch housing designs are 40% slower

Check for their positive modularity

Return list of birds that not in the list of geese.

Sorry I thought that we need to check $n first.

The Kata definition is: Build a function that returns an array of integers from n to 1 where n>0.

You need to check first if $n is greater than 0

Can someone explain to me this kata with simple words? thanx a lot.

This is so true, at first I did it wrong because in my mind was something complicated. It

This one is actually a nice example of how complex problem can solve easily if you find any pattern.

Check what those methods return (it's a boolean), and return the array instead.