X-Git-Url: https://git.ralfj.de/rust-101.git/blobdiff_plain/8fcdbed310c53f621fba0401399659ed1a1ec446..77f9c2a913324c4cca010fb5a5e1fa12173e8374:/src/part09.rs?ds=sidebyside diff --git a/src/part09.rs b/src/part09.rs index 2a46d77..d4b3e66 100644 --- a/src/part09.rs +++ b/src/part09.rs @@ -5,7 +5,7 @@ use part05::BigInt; //@ In the following, we will look into the iterator mechanism of Rust and make our `BigInt` compatible //@ with the `for` loops. Of course, this is all about implementing certain traits again. In particular, -//@ an iterator is something that implements the `Iterator` trait. As you can see in [the documentation](http://doc.rust-lang.org/beta/std/iter/trait.Iterator.html), +//@ an iterator is something that implements the `Iterator` trait. As you can see in [the documentation](https://doc.rust-lang.org/stable/std/iter/trait.Iterator.html), //@ this trait mandates a single function `next` returning an `Option`, where `Item` is an //@ associated type chosen by the implementation. (There are many more methods provided for `Iterator`, //@ but they all have default implementations, so we don't have to worry about them right now.) @@ -121,7 +121,7 @@ fn iter_invalidation_demo() { // ## Iterator conversion trait //@ If you closely compare the `for` loop in `main` above, with the one in `part06::vec_min`, you will notice that we were able to write //@ `for e in v` earlier, but now we have to call `iter`. Why is that? Well, the `for` sugar is not actually tied to `Iterator`. -//@ Instead, it demands an implementation of [`IntoIterator`](http://doc.rust-lang.org/beta/std/iter/trait.IntoIterator.html). +//@ Instead, it demands an implementation of [`IntoIterator`](https://doc.rust-lang.org/stable/std/iter/trait.IntoIterator.html). //@ That's a trait of types that provide a *conversion* function into some kind of iterator. These conversion traits are a frequent //@ pattern in Rust: Rather than demanding that something is an iterator, or a string, or whatever; one demands that something //@ can be converted to an iterator/string/whatever. This provides convenience similar to overloading of functions: The function @@ -146,4 +146,4 @@ impl<'a> IntoIterator for &'a BigInt { //@ then you will obtain ownership of the elements during the iteration - and destroy the vector in the process. We actually did that in //@ `part01::vec_min`, but we did not care. You can write `for e in &v` or `for e in v.iter()` to avoid this. -//@ [index](main.html) | [previous](part08.html) | [next](main.html) +//@ [index](main.html) | [previous](part08.html) | [raw source](https://www.ralfj.de/git/rust-101.git/blob_plain/HEAD:/workspace/src/part09.rs) | [next](part10.html)