Can you write a new derivable trait in regular Rust? /cc @steveklabnik @pcwalton
@evanphx @steveklabnik They're procedural macros expanded by the macro system, which are currently all built into the compiler
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@pcwalton@steveklabnik Do those macros change behavior based on impl'd fns? For example, defining Compare and deriving Eq that uses it. -
@evanphx@steveklabnik Not sure what you mean, example? - 3 more replies
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