X-Git-Url: https://git.ralfj.de/rust-101.git/blobdiff_plain/cc52afa7f2b54d29870ff16f1f11970dd38c1940..a3a64118702b4f75691de78d42256c306f286014:/src/part07.rs?ds=sidebyside diff --git a/src/part07.rs b/src/part07.rs index eb1e0dc..2d88390 100644 --- a/src/part07.rs +++ b/src/part07.rs @@ -4,8 +4,8 @@ pub use part05::BigInt; // With our new knowledge of lifetimes, we are now able to write down the desired type of `min`: -//@ We want the function to take two borrows *of the same lifetime*, and then -//@ return a borrow of that lifetime. If the two input lifetimes would be different, we +//@ We want the function to take two references *with the same lifetime*, and then +//@ return a reference with that lifetime. If the two input lifetimes would be different, we //@ would not know which lifetime to use for the result. pub trait Minimum { fn min<'a>(&'a self, other: &'a Self) -> &'a Self; @@ -66,7 +66,7 @@ impl PartialEq for BigInt { //@ and [`Eq`](https://doc.rust-lang.org/std/cmp/trait.Eq.html). `Eq` can be automatically derived as well. // Now we can compare `BigInt`s. Rust treats `PartialEq` special in that it is wired to the operator `==`: -//@ That operator can not be used on our numbers! Speaking in C++ terms, we just overloaded the `==` operator +//@ That operator can now be used on our numbers! Speaking in C++ terms, we just overloaded the `==` operator //@ for `BigInt`. Rust does not have function overloading (i.e., it will not dispatch to different //@ functions depending on the type of the argument). Instead, one typically finds (or defines) a //@ trait that catches the core characteristic common to all the overloads, and writes a single