我有 2 个哈希,例如:
{'a' => 30, 'b' => 14}
{'a' => 4, 'b' => 23, 'c' => 7}
其中 a
、b
和 c
是对象。我怎样才能将这些散列的键相加以获得新的散列,例如:
{'a' => 34, 'b' => 37, 'c' => 7}
最佳答案
a_hash = {'a' => 30, 'b' => 14}
b_hash = {'a' => 4, 'b' => 23, 'c' => 7}
a_hash.merge(b_hash){ |k, a_value, b_value| a_value + b_value }
=> {"a"=>34, "b"=>37, "c"=>7}
b_hash.merge(a_hash){ |k, b_value, a_value| a_value + b_value }
=> {"a"=>34, "b"=>37, "c"=>7}
关于ruby - Sum 2 具有相同键的散列属性,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/4091487/