class Hash

# File lib/hashr/core_ext/ruby/hash.rb, line 34
def deep_merge(other)
  merger = proc { |key, v1, v2| Hash === v1 && Hash === v2 ? v1.merge(v2, &merger) : v2 }
  merge(other, &merger)
end

# File lib/hashr/core_ext/ruby/hash.rb, line 12
def deep_symbolize_keys
   symbolizer = lambda do |value|
    case value
    when Hash
      value.deep_symbolize_keys
    when Array
      value.map { |value| symbolizer.call(value) }
    else
      value
    end
  end
  inject({}) do |result, (key, value)|
    result[(key.to_sym rescue key) || key] = symbolizer.call(value)
    result
  end
end

# File lib/hashr/core_ext/ruby/hash.rb, line 29
def deep_symbolize_keys!
  replace(deep_symbolize_keys)
end

# File lib/hashr/core_ext/ruby/hash.rb, line 8
def except(*less_keys)
  slice(*keys - less_keys)
end

# File lib/hashr/core_ext/ruby/hash.rb, line 2
def slice(*keep_keys)
  h = {}
  keep_keys.each { |key| h[key] = fetch(key) if key?(key) }
  h
end