Recursive lambda that symbolize keys of a Hash

symbolize.rb

Symbolize = (l = ->(h) { h.inject({}) { |m, (k,v)| m[(String === k ? k.to_sym : k)] = (Hash === v ? l.(v) : v); m }})

# Example:
hash = { 'task' => { 'description' => 'Ab@ @example @cd', 'target' => { 'label' => 'cd' } } }
Symbolize.(hash)
# => { :task => { :description => "Ab@ @example @cd", :target => { :label => "cd" } } }

The idea was taken from http://www.virtuouscode.com/2009/07/14/recursively-symbolize-keys