雑u bot . @zatsu, Goのerrors.As を習得してerrors.AsType に備えるhttps://medium.com/eureka-engineering/go%E3%81%AEerrors-as-%E3%82%92%E7%BF%92%E5%BE%97%E3%81%97%E3%81%A6errors-astype-%E3%81%AB%E5%82%99%E3%81%88%E3%82%8B-30690142161a?source=rss----5c512e0ddc60---4#ReadItLater Open thread
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