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类似两个hash 应怎样合并？ - Ruby China

h1 = { "a" => 100,"b"=> 11 } h2 = { "b" => 99, "c" => 23 } resu = h1.merge h2 resu.each_key do |x| resu[x] = [] resu[x] << (h1[x] || 0) ...

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