Module: RorHack::HashHack

Included in:
Hash, HashWithIndifferentAccess
Defined in:
lib/ror_hack/hash_hack.rb

Instance Method Summary collapse

Instance Method Details

#add_placeholder(key_array, value = nil) ⇒ Object 



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# File 'lib/ror_hack/hash_hack.rb', line 3

def add_placeholder(key_array, value = nil)
  keys = self.keys.map(&:to_sym)
  key_array.each do |key|
    next if key.to_sym.in? keys # hash本身已经有这个键，则跳过复制。
    if value
      self[key] = value.deep_dup
    else
      self[key] = default(nil)
    end
  end
  self
end

#delete_recursively(array) ⇒ Object 



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# File 'lib/ror_hack/hash_hack.rb', line 29

def delete_recursively(array)
  self.except!(*array)
  each do |_k, v|
    if v.is_a? Hash
      v.delete_recursively(array)
    end
  end
  self
end

#get_last_value(&block) ⇒ Object

默认不做排序,用hash本身的顺序.



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# File 'lib/ror_hack/hash_hack.rb', line 23

def get_last_value(&block)
  keys = self.keys
  keys = keys.sort(&block) if block
  self[keys.last]
end

#sort_eql?(hash) ⇒ Boolean

两个hash的顺序也相等？

Returns:

  • (Boolean) 


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# File 'lib/ror_hack/hash_hack.rb', line 17

def sort_eql?(hash)
  return false unless hash.is_a? Hash
  to_a == hash.to_a
end