Class: Hash

Inherits:
Object
  • Object
show all
Defined in:
lib/hash_extensions.rb

Instance Method Summary collapse

Instance Method Details

#dig(*path) ⇒ Object

Search for key path in hash

Examples

{ a: { b: :c } }.dig(:a, :b) # => :c
{ a: { 'b' => :c } }.dig(:a, :b) # => :c
{ a: { b: :c } }.dig(:a, :c) # => nil



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# File 'lib/hash_extensions.rb', line 11

def dig(*path)
  path.reduce(self) do |location, key|
    location.respond_to?(:keys) ? location.stringify_keys[key.to_s] : nil
  end
end

#values_for(key) ⇒ Object

Search the Hash deeply for all values matching the key.

Examples

{ a: :b, c: { a: '1', d: :e } }.values_for('a') # => [:b, '1']



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# File 'lib/hash_extensions.rb', line 22

def values_for(key)
  found_values = []
  self.each do |k, v|
    found_values << v if k.to_s == key.to_s
    if v.is_a? Hash
      found_values << v.values_for(key)
    end
  end

  found_values.flatten.compact
end