Add requirements of TotalEq and TotalOrd #13358
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| * This means, that additionally to `a == b` and `a != b` being strict | ||
| * inverses, the following three properties are required: | ||
| * | ||
| * Reflexivity, which means that `a == a` must be true for all `a`. |
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Can you make this a list, e.g.
/**
* Trait for equality comparisons that form an [equalence relation](...).
*
* The equality must be (for all `a`, `b` and `c`):
*
* - reflexive: `a == a`;
* - symmetric: `a == b` implies `b == a`; and
* - transitive: `a == b` and `b == c` implies `a == c`.
*
* `a == b` and `a != b` must be strict inverses.
*/
Clarify that TotalEq needs an underlying equivalence relation and that TotalOrd needs a total ordering and specifically named the required (and sufficient) attributes.
| @@ -62,7 +62,18 @@ pub trait Eq { | |||
| fn ne(&self, other: &Self) -> bool { !self.eq(other) } | |||
| } | |||
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| /// Trait for equality comparisons where `a == b` and `a != b` are strict inverses. | |||
| /** | |||
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Nit: we don't use block comments, use /// on every line.
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Add requirements of TotalEq and TotalOrd Clarify that TotalEq needs an underlying equivalence relation and that TotalOrd needs a total ordering and specifically named the required (and sufficient) attributes.
|
What's wrong with block comments exactly? |
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Oct 18, 2022
…on, r=Veykril feat: Autocomplete Cargo-defined env vars in `env!` and `option_env!` (rust-lang#12448) Closes rust-lang#12448 Important to know: - Variables are taken from https://doc.rust-lang.org/cargo/reference/environment-variables.html and hardcoded as a const array. - For the sake of simplicity I didn't include the autocompletion of `CARGO_BIN_EXE_<name>` and `OUT_DIR` since it would require information about build.rs and binary name. If somebody knows an easy way of obtaining them I can add those vars as well :)
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Add requirements of TotalEq and TotalOrd
Clarify that TotalEq needs an underlying equivalence relation and that TotalOrd
needs a total ordering and specifically named the required (and sufficient)
attributes.