Uhm, I need to correct some hasty typos.


> h3 = Hash.new { |h,k| h[k] = [] }
> h2[:a]  << "alpha"  #=> ["alpha"]
should be
> h3[:a]  << "alpha"  #=> ["alpha"]

>
> l = lambda { |h,k| h[k] = Hash.new &l }
> h4 = Hash.new &l
> h[:a][:b][:c] = 5   #=> { :a => { :b => { :c => {} }}}
should be
> h4[:a][:b][:c] = 5   #=> { :a => { :b => { :c => 5 }}}


Jim Freeze