これ &mut x.0 じゃなくて &mut (*x).0 ですね(xが&mut (Vec<T>,)) なのでhttps://twitter.com/ubnt_intrepid/status/1246130747854880768 …
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これ &mut x.0 じゃなくて &mut (*x).0 ですね(xが&mut (Vec<T>,)) なのでhttps://twitter.com/ubnt_intrepid/status/1246130747854880768 …