Question

Let’s say I have a method (which is actually a helper):

def f(x)  
  x + 1  
end

What I want to do is to map it over an enumerable like so:

(1..10).map &f

It’s obviously doesn’t work raising ArgumentError: wrong number of arguments (0 for 1)
error. I know that I can call this method in block like so:

(1..10).map {|x| f x }

But it doesn’t look like an elegant solution to me. What else can be done about it?

Answer 1

You could use:

(1..10).map(&method(:f))