Implement Any for unsized types #30928
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This is a bit weird since unsized types can't be used in trait objects, but Any is *also* used as pure marker trait since Reflect isn't stable. There are many cases (e.g. TypeMap) where all you need is a TypeId.
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I have a vague inkling that we intentionally didn't do this in the past, but trying to recall the reason as to why I have no idea. As a result I'd be fine with this, but would like another sign-off as well. |
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📌 Commit 5d2275d has been approved by |
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⌛ Testing commit 5d2275d with merge 41589a8... |
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💔 Test failed - auto-mac-64-nopt-t |
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@bors: retry On Sat, Jan 16, 2016 at 12:20 AM, bors notifications@github.com wrote:
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⌛ Testing commit 5d2275d with merge 21b8880... |
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💔 Test failed - auto-linux-64-nopt-t |
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@bors: retry |
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⌛ Testing commit 5d2275d with merge 373bc01... |
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💔 Test failed - auto-linux-64-nopt-t |
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@bors: retry |
This is a bit weird since unsized types can't be used in trait objects, but Any is *also* used as pure marker trait since Reflect isn't stable. There are many cases (e.g. TypeMap) where all you need is a TypeId. r? @aturon
brson
added
the
relnotes
This is a bit weird since unsized types can't be used in trait objects,
but Any is also used as pure marker trait since Reflect isn't stable.
There are many cases (e.g. TypeMap) where all you need is a TypeId.
r? @aturon