Question

I am trying to classify characters using a case statement, but I am not sure how I would go about this in Ruby.

Here is what I have:

  case c
  when ('a'..'z'), ('A'..'Z'), '$'
    puts "#{c} true"
  when ' '
    #ignore spaces
  else
    puts "#{c} false"
  end

But this is kind of messy and I’d like to simplify it. Is there anyway to simplify this with a regular expression?

Something like:

  case c
  when '[a-zA-Z$]'
    puts "#{c} true"
  when '[\s]'
    #ignore whitespace
  else
    puts "#{c} false"
  end

How would something like this be done in Ruby?

Answer 1

Absolutely! But the syntax should be like this:

case c
when /[a-zA-Z$]/
  puts "#{c} true"
when /\s/
  # ignore
else
  puts "#{c} false"
end