alt Hacker Newshow do apis typically manage to actually « use » the « bar » of your example, such as storing it somewhere, without enforcing some kind of constraints ?
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Maxatar • yesterday at 6:58 PM
If you need to store the value then you have no choice but to take in a dyn trait.
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"BarTrait" is the constraint.
This is monomorphized for every type you pass in, in short.