Using implicit as type constraint

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As far as I know, there are 2 ways to add type constraint. trait Dummy 1. def doStuff[T < Dummy](x: T) = x 2. def doStuff[T](x: T)(implicit x: T <:< Dummy) = x

Both achieve the same result.

I just wonder that what kind of scenarios I should use the upper bound or lower bound directly, or I should use implicit to append the constraint on the type.

Thanks in advance and it would be nice for a code example.

asked 35 secs ago

Cloud tech

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