Auto merge of #55045 - kleimkuhler:add-std-is_sorted, r=KodrAus

Add `is_sorted` to `Iterator` and `[T]`

This is an initial implementation for the first step of [RFC 2351](https://github.com/rust-lang/rfcs/blob/master/text/2351-is-sorted.md)

Tracking issue: https://github.com/rust-lang/rust/issues/53485

1 files changed, 11 insertions, 0 deletions

diff --git a/src/doc/unstable-book/src/library-features/is-sorted.md b/src/doc/unstable-book/src/library-features/is-sorted.md
new file mode 100644
index 00000000000..e3b7dc3b28e
--- /dev/null
+++ b/src/doc/unstable-book/src/library-features/is-sorted.md
@@ -0,0 +1,11 @@
+# `is_sorted`
+
+The tracking issue for this feature is: [#53485]
+
+[#53485]: https://github.com/rust-lang/rust/issues/53485
+
+------------------------
+
+Add the methods `is_sorted`, `is_sorted_by` and `is_sorted_by_key` to `[T]`;
+add the methods `is_sorted`, `is_sorted_by` and `is_sorted_by_key` to
+`Iterator`.