A year ago there was a group of Rust users that argued relentlessly that ? was not explicit & that we absolutely should not accept the RFC or stabilize it. But you give it as a good example of explicitness! Here's a great post by pcwalton remembering features that were once similarly argued against as too implicit, but today are taken for granted by everyone. While I've tried to be empathetic and open-minded to the concerns people have about implicitness, I see this pattern reoccurring in our conversations and I consider it when I evaluate peoples' comments.
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