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Why are zero-sized clones of function items useful?
OP of an internals thread wrote:
I can see the value of being able to .clone() a function item and get a zero sized result, so the coercion shouldn't happen in all cases.
What is the practical use of zero-sized clones of function items in Rust? It seems that if it wasn't for such use cases, function items could automatically be coerced to function pointers by the compiler.
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