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Yes, the idea is to provide a way to denote self-referentiality so that the compiler can correctly apply noalias optimizations to &mut data that is not self-referential. See this comment, this comment, and this document.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
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The copyless crate can help make it more likely that this optimization will happen.
NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a more popular project.