Ruby: check if object is nil

Question

  def parse( line )
    _, remote_addr, status, request, size, referrer, http_user_agent, http_x_forwarded_for = /^([^\\s]+) - (\\d+) \\\"(.+)\\\" (\\d+) \\\"(.*)\\\" \\         


        

Answer 1

Ruby 2.3.0 added a safe navigation operator (&.) that checks for nil before calling a method.

request&.split(' ')

This is more or less semantically equivalent to

!request.nil? && request.split(' ')