method

transform_keys!

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transform_keys!() public

Destructively converts all keys using the block operations. Same as transform_keys but modifies self.

# File activesupport/lib/active_support/core_ext/hash/keys.rb, line 23
  def transform_keys!
    return enum_for(:transform_keys!) { size } unless block_given?
    keys.each do |key|
      self[yield(key)] = delete(key)
    end
    self
  end

transform_keys!

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