Module: EnumerableToString

Defined in:
lib/utilrb/enumerable/to_s_helper.rb

Class Method Summary collapse

Class Method Details

.to_s_helper(enumerable, start, stop) ⇒ Object

This method is a generic implementaion of #to_s on enumerables.



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# File 'lib/utilrb/enumerable/to_s_helper.rb', line 3

def self.to_s_helper(enumerable, start, stop)
  stack = (Thread.current[:to_s_helper] ||= [])
  if stack.include?(enumerable.object_id)
 "..."
  else
 begin
    stack.push enumerable.object_id
    start.dup << enumerable.map { |el| yield(el) }.join(", ") << stop
 ensure
    stack.pop
 end
  end
end