DeedleFake

Maybe an explicit `unsafe` function or two for just this purpose would make sense, then? It could potentially do the copy automatically if necessary and not do it if it...

> I don't understand this. If you add any method to `List`, your example does not compile: https://go.dev/play/p/AgCfvZIho_i. Neither of the interfaces are sealed. It is strictly less flexible than...

This comment was originally about how I don't like that using interfaces with type lists as unions would require new top-level types in order to name the options, but after...

The zero value of interfaces as unions has been discussed elsewhere, especially in #41716. I don't think that a good solution was ever decided on. I believe the main options...

I wasn't clear, but my original comment was meant as a response to @ianlancetaylor's comment a few before where he mentioned the idea of using interfaces as unions. I agree...

It seems to me that the main draw of #57644 is that it attempts to reuse the constraint type lists for something that _looks_ very similar, but it's actually quite...

If you leave it as zeroing only this could make use of #56351, but you could also make it a bit more flexible by making it something like `type RepeatReader...

I'm unclear how often something like would be useful. Velocity, time, and distance are pretty obvious, but in a program, how often can types be related like this? Can this...

Go purposefully has no thread-local storage system, and it even purposefully avoids exposing anything that would make it easy to implement one, like IDs. One could be implemented for something...

In that case, while I would certainly not be against exporting `fastrand()` in some way, it should be noted that you _can_ use a [`//go:linkname` directive](https://pkg.go.dev/cmd/compile) to get [direct access...