Method: Hash#slice

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

#slice(*keep_keys) ⇒ Object

Returns a new hash with only the given keys.

h = {:a=>1, :b=>2, :c=>3}
h.slice(:a, :c)  #=> {:a=>1, :c=>3}
h.slice(:a, :d)  #=> {:a=>1}



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# File 'lib/core/facets/hash/slice.rb', line 9

def slice(*keep_keys)
  if block_given?
    each do |k, v|
      keep_keys << k if yield(k, v)
    end
  end

  keep_keys.each_with_object({}) do |key, hash|
    hash[key] = fetch(key) if key?(key)
  end
end