gistfile1.txt

jason@jsn cr $ head -n 1000 z.cr z2.cr 
==> z.cr <==
class Z
  def self.f
    puts "in class method"
    return Time.now
  end

  @@x : Time = f()

  def self.x
    @@x
  end

  puts "in class"
end
puts "out of class"

==> z2.cr <==
puts Z.x()
puts "before"
require "./z"
puts "after"
jason@jsn cr $ crystal z2.cr 
in class method
2018-02-09 03:02:18 +03:00
before
in class
out of class
after
jason@jsn cr $