For what it’s worth, there are two things that cause an if to go false: false and nil
if
false
nil
Empty things are neither false nor nil, but you can’t call first on an empty sequence or you get an exception.
first
Other than that, your solution is really quite similar to the comp source itself.
comp
For what it’s worth, there are two things that cause an
ifto gofalse:falseandnilEmpty things are neither
falsenornil, but you can’t callfirston an empty sequence or you get an exception.Other than that, your solution is really quite similar to the
compsource itself.