Method: Hash#traverse

Defined in:
lib/core/facets/hash/traverse.rb

#traverse(&block) ⇒ Object

Returns a new hash created by traversing the hash and its subhashes, executing the given block on the key and value. The block should return a 2-element array of the form [key, value].

h = {"A"=>"A", "B"=>"B", "C"=>{"X"=>"X"}}

g = h.traverse{ |k,v| [k.downcase, v] }

g  #=> {"a"=>"A", "b"=>"B", "c"=>{"x"=>"X"}}

NOTE: Hash#traverse is the same as ‘recursive.graph` and might be deprecated in the future (if it ever works!)

CREDIT: Trans


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# File 'lib/core/facets/hash/traverse.rb', line 18

def traverse(&block)
  inject({}) do |h,(k,v)|
    if Hash === v
      v = v.traverse(&block)
    elsif v.respond_to?(:to_hash)
      v = v.to_hash.traverse(&block)
    end
    nk, nv = block.call(k,v)
    h[nk] = nv
    h
  end
end