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[package]
edition = "2018"
name = "upcast"
version = "0.1.0"
authors = ["Connie Hilarides <conni_h@outlook.com>"]
description = "Simple trait for helping along upcasting of dyn supertraits.\n\n```\npub trait A {}\npub trait B: A + Upcast<dyn A> {}\n\n// Put this in your library\nimpl<'a, T: A + 'a> UpcastFrom<T> for dyn A + 'a {\n    fn up_from(value: &T) -> &(dyn A + 'a) { value }\n    fn up_from_mut(value: &mut T) -> &mut (dyn A + 'a) { value }\n}\n\n// Now your users can do an upcast if needed, or you can within implementations\nfn do_cast(b: &dyn B) -> &dyn A {\n    b.up()\n}\n```\n"
keywords = ["upcast", "supertraits"]
license = "MIT"
repository = "https://github.com/connicpu/upcast"