Revise the kind system #1177
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ghost
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This was referenced Nov 15, 2011
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This goes before a snapshot, so that subsequenct patches can make the transition without breaking the build. Disables kind checking pass, makes parser accept both new and old-style kind annotation. Issue #1177
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This is intended to solve the problem of how to pass arguments to constructor functions -- you want to move in rvalues, but not have to explicitly copy stuff that is not an rvalue. The by-copy passing convention will ensure the callee gets its own copy of the value. For rvalues, it'll just pass off the value. For lvalues, it'll make a copy. Issue #1177
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Not really useful yet because missing last-use-of-local optimization. Also: instantiation of type parameters needs to be checked. Issue #1177
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This involved adding 'copy' to more generics than I hoped, but an experiment with making it implicit showed that that way lies madness -- unless enforced, you will not remember to mark functions that don't copy as not requiring copyable kind. Issue #1177
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Discussion in https://mail.mozilla.org/pipermail/rust-dev/2011-November/000922.html . In short, copyability, instead of moveability, will be the defining characteristic of the middle kind. Kinds are now
noncopyable:>copyable:>sendable.The text was updated successfully, but these errors were encountered: