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llxxbb
llxxbb has asked
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expected a closure that implements the `Fn` trait, but this closure only implements `FnOnce`
How do I avoid generating JSON when serializing a value that is null or a default value?
llxxbb answers
expected a closure that implements the `Fn` trait, but this closure only implements `FnOnce`
How do I avoid generating JSON when serializing a value that is null or a default value?
I want to start Rocket in a module out of `main()` but failed
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