Your sort method isn't really what most people would consider functional
programming, being that it relies on mutating the array (and the
each-method
which isn't even present in purely functional languages being that it
needs
side-effects to have any effect at all).
Ok, but it does look elegant and in one line.
That's how programs should look.
'The 'each' method can give me index of an element. I would use 'map'
instead
but it can't give me index, just the element so I would have to create a new
list.
I guess that would be pure functional and maybe more efficient in this
case..
What are side-effects in this case ?
If you want to implement a sort method in functional style, you should
consider doing a recursive quick sort, which is quite simple and can be
done
in one line if you don't count the "def foo()" and "end" as their own
lines.
Also functional programming does not equal "one line". There's nothing
wrong
with spreading it out over multiple lines for readability.
Just what I was going to try next.