class Hash
Public Instance Methods
compact()
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Returns a copy of self with all blank keys removed.
hash = { name: 'Rob', age: '', title: nil } hash.compact # => { name: 'Rob' }
# File lib/flappy/patches/hash.rb, line 10 def compact delete_if { |_, v| v.is_a?(FalseClass) ? false : v.blank? } end
deep_symbolize_keys()
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Returns a new hash with all keys converted to symbols, as long as they respond to to_sym
. This includes the keys from the root hash and from all nested hashes and arrays.
hash = { 'person' => { 'name' => 'Rob', 'age' => '28' } } hash.deep_symbolize_keys # => {:person=>{:name=>"Rob", :age=>"28"}}
# File lib/flappy/patches/hash.rb, line 60 def deep_symbolize_keys deep_transform_keys { |key| key.to_sym rescue key } end
deep_transform_keys(&block)
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Returns a new hash with all keys converted by the block operation. This includes the keys from the root hash and from all nested hashes and arrays.
hash = { person: { name: 'Rob', age: '28' } } hash.deep_transform_keys{ |key| key.to_s.upcase } # => {"PERSON"=>{"NAME"=>"Rob", "AGE"=>"28"}}
# File lib/flappy/patches/hash.rb, line 48 def deep_transform_keys(&block) _deep_transform_keys_in_object(self, &block) end
symbolize_keys()
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Returns a new hash with all keys converted to symbols, as long as they respond to to_sym
.
hash = { 'name' => 'Rob', 'age' => '28' } hash.symbolize_keys # => {:name=>"Rob", :age=>"28"}
# File lib/flappy/patches/hash.rb, line 36 def symbolize_keys transform_keys { |key| key.to_sym rescue key } end
transform_keys() { |key| ... }
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Returns a new hash with all keys converted using the block operation.
hash = { name: 'Rob', age: '28' } hash.transform_keys{ |key| key.to_s.upcase } # => {"NAME"=>"Rob", "AGE"=>"28"}
# File lib/flappy/patches/hash.rb, line 20 def transform_keys return enum_for(:transform_keys) unless block_given? result = self.class.new each_key do |key| result[yield(key)] = self[key] end result end
Private Instance Methods
_deep_transform_keys_in_object(object) { |key| ... }
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support methods for deep transforming nested hashes and arrays
# File lib/flappy/patches/hash.rb, line 67 def _deep_transform_keys_in_object(object, &block) case object when Hash object.each_with_object({}) do |(key, value), result| result[yield(key)] = _deep_transform_keys_in_object(value, &block) end when Array object.map { |e| _deep_transform_keys_in_object(e, &block) } else object end end