pub fn vec_min<T: Minimum>(v: &Vec<T>) -> Option<&T> {
let mut min: Option<&T> = None;
for e in v {
- min = Some(match min { /*@*/
- None => e, /*@*/
- Some(n) => n.min(e) /*@*/
- }); /*@*/
+ min = Some(match min {
+ None => e,
+ Some(n) => n.min(e)
+ });
}
min
}
//@ Since implementing `PartialEq` is a fairly mechanical business, you can let Rust automate this
//@ by adding the attribute `derive(PartialEq)` to the type definition. In case you wonder about
-//@ the "partial", I suggest you check out the documentation of [`PartialEq`](http://doc.rust-lang.org/std/cmp/trait.PartialEq.html)
-//@ and [`Eq`](http://doc.rust-lang.org/std/cmp/trait.Eq.html). `Eq` can be automatically derived as well.
+//@ the "partial", I suggest you check out the documentation of [`PartialEq`](https://doc.rust-lang.org/std/cmp/trait.PartialEq.html)
+//@ 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 `PratialEq` 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
//@ 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
//@ function that's generic in the trait. For example, instead of overloading a function for all
-//@ the ways a string can be represented, one writes a generic functions over [ToString](http://doc.rust-lang.org/std/string/trait.ToString.html).
+//@ the ways a string can be represented, one writes a generic functions over [ToString](https://doc.rust-lang.org/std/string/trait.ToString.html).
//@ Usually, there is a trait like this that fits the purpose - and if there is, this has the great
//@ advantage that any type *you* write, that can convert to a string, just has to implement
//@ that trait to be immediately usable with all the functions out there that generalize over `ToString`.
//@ that users can understand, while `Debug` is meant to show the internal state of data and targeted at
//@ the programmer. The latter is what we want for `assert_eq!`, so let's get started.
-// All formating is handled by [`std::fmt`](http://doc.rust-lang.org/std/fmt/index.html). I won't explain
+// All formating is handled by [`std::fmt`](https://doc.rust-lang.org/std/fmt/index.html). I won't explain
// all the details, and refer you to the documentation instead.
use std::fmt;