gistfile1.txt

jason@jsn cr $ crystal z2.cr 
in class method for x
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before
in class method for y
in class
out of class
after
jason@jsn cr $ head -n 1000 z.cr z2.cr 
==> z.cr <==
class Z
  def self.f(k)
    puts "in class method for #{k}"
    return Time.now
  end

  @@x : Time = f(:x)
  @@y : Time = f(:y)

  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 for x
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before
in class method for y
in class
out of class
after
jason@jsn cr $