simplest way to check for just spaces in ruby

Question

So I know in ruby that x.nil? will test if x is null.

What is the simplest way to test if x equals ' ', or ' '(two spaces), or ' '(three spaces), etc?

Basically, I'm wondering what the best way to test if a variable is all whitespace?

Answer 1

s =~ /\A\s*\Z/

Regex solution. Here's a short ruby regex tutorial.