我有一个Ruby哈希:
ages = { "Bruce" => 32,
"Clark" => 28
}
假设我有另一个替换名散列,有没有一种优雅的方法来重命名所有密钥,这样我就可以得到:
ages = { "Bruce Wayne" => 32,
"Clark Kent" => 28
}
我有一个Ruby哈希:
ages = { "Bruce" => 32,
"Clark" => 28
}
假设我有另一个替换名散列,有没有一种优雅的方法来重命名所有密钥,这样我就可以得到:
ages = { "Bruce Wayne" => 32,
"Clark Kent" => 28
}
ages = { 'Bruce' => 32, 'Clark' => 28 }
mappings = { 'Bruce' => 'Bruce Wayne', 'Clark' => 'Clark Kent' }
ages.transform_keys(&mappings.method(:[]))
#=> { 'Bruce Wayne' => 32, 'Clark Kent' => 28 }