Ruby’s fanciness bit me in the butt today. It’s pretty rare, but often confusing AF when it happens.

array = [1, 2, 3, 4, 5, 6, 7]
array.count +1 +2
# => 1
What the fuck?

array.count +1 +2 +3
# => 1
What the fuck?

+1 +2 +3
# => 6
Okay.

(array.count +1 +2 +3)
# => 1
What the fuck?

(7 +1 +2 +3)
# => 13
Okay...

array.count + 1 + 2 + 3
# => 13
Alright, so spaces matter here...?

((array.count) +1 +2 +3)
# => 13
But not here!? ... Oh. I think I know what’s going on.

Array#count
Returns the number of elements. If an argument is given, counts the number of elements which equal it using ==

Well fuck me.

Ruby is seeing `array.count(+1+2+3)` instead of `array.count()+1+2+3` since `+1` is a value, not an operator followed by a value as is the case with `+ 1`.

Now, why was I using +1 +2 instead of adding some spaces like I normally would? So they would match what was in the comment next to them for easier reference. Heh.

Future dev, I did this for you! So this is all your fault. :|