I can not find a built-in function to check the type of my param in this function (Rust):
pub fn notify<T: Summary + Display>(item: &T) {
// type of "item" (Summary || Display)
}
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Chayim Friedman
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lainhathoang
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3You generally can't. This is probably an [XY problem](https://xyproblem.info/). Perhaps you should edit your question to describe _why_ you want to do this, and we can suggest alternatives. – cdhowie Jun 23 '22 at 10:38
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What do you mean, check the type? The compiler will make sure that `item` is both `Summary` **and** `Display`. – Sergio Tulentsev Jun 23 '22 at 10:44
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Also, by that `Summary || Display`, I think that you think `T: Summary+Display` means `T: Summary` or `T: Display`, whereas it's `T: Summary` **and** `T: Display`. – jthulhu Jun 23 '22 at 11:09