all: rewrite `interface{}` to `any`

[griesemer]

Reminder issue.

[griesemer]

The type checker preserves the difference between interface{} and any (it keeps track of the alias in this case, like it does for byte and uint8), so tests that rely on printing interface{} as "interface{}" must remain unchanged. And so should tests in testdata directories.

[griesemer]

@findleyr Please comment here once you're satisfied with the handling of any in the importers.

[gopherbot]

Change https://golang.org/cl/368254 mentions this issue: all: gofmt -w -r 'interface{} -> any' src

[AlphaHot]

No, please don't do that. I'm used to the interface{}.

[ii64]

Nice

[kostyaBro]

What problem does this solve? Can you describe?

It also seems to me to break backward compatibility.

[cristaloleg]

No, it doesn't break backward compatibility, see original issue/proposal. any is just an alias for interface{}.

[rsc]

This is not the issue, nor the time, to debate allowing any. This issue is about tracking certain work. Regarding allowing any at all, we had the proposal discussion, and the proposal was accepted. See #33232 (comment) for the rationale. No one is raising any new information that would warrant reopening the decision.

[gopherbot]

Change https://golang.org/cl/369955 mentions this issue: go/internal/gcimporter: fix test for Go 1.18 any