hacks/holder

Public Methods

Holder(klass)

Create a Holder class, to allow non-reference objects to be returned. In Scheme, this might be known as a "Box".

Example:

  FixnumHolder = Holder(Fixnum)
  def foo(inout)
      inout.value = 42
  end
  a = FixnumHolder.new(10)
  puts a                      #=> 10
  foo(a)
  puts a                      #=> 42
  puts a + 5                  #=> 47

klass	the type to generate a holder class for.

Returns: a new class that can be used as a holder.

class Holder < Object

Public Methods

initialize(i)

value=(other)

value

to_s

Requires