Add comment for Ord implementation for array

[ldm0]

Corresponding to Ord implementation for slice. It hints new comer the rule of comparing two arrays.

[rust-highfive]

r? @sfackler

(rust_highfive has picked a reviewer for you, use r? to override)

[sfackler]

I don't believe that comment will be displayed anywhere in the documentation, but if you move it down to the cmp method it will.

[ldm0]

I don't believe that comment will be displayed anywhere in the documentation, but if you move it down to the cmp method it will.

Sorry, but it actually will be displayed after expanding the impl block. You can check https://doc.rust-lang.org/std/primitive.slice.html#impl-Ord and

rust/src/libcore/slice/mod.rs

Lines 5795 to 5803 in 8da5869

	/// Implements comparison of vectors lexicographically.
	#[stable(feature = "rust1", since = "1.0.0")]
	impl<T: Ord> Ord for [T] {
	fn cmp(&self, other: &[T]) -> Ordering {
	SliceOrd::compare(self, other)
	}
	}

[sfackler]

Oh, great!

@bors r+ rollup

[bors]

📌 Commit 5087c1a has been approved by sfackler