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From: Peter Dimov (pdimov_at_[hidden])
Date: 2020-09-23 15:13:24

Scott Determan wrote:

> My understanding is when implementing a tag_invoke customization point it
> should be a hidden friend because it improves compile times by keeping
> overload sets smaller. If that is best practice (and it may not be; I'm
> not a tag_invoke expert), [...]

It is indeed a best practice, for the reason you give. That's especially
important for tag_invoke, because all overloads share the same name.

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