From 9cd271e445f86cf03a44fc9bf0e2e0554dfe2a75 Mon Sep 17 00:00:00 2001 From: Ryan Huang Date: Thu, 17 Jan 2019 00:35:18 -0800 Subject: [PATCH] Add minimum Rust version for Kleene operator --- src/rust-2018/macros/at-most-once.md | 2 ++ 1 file changed, 2 insertions(+) diff --git a/src/rust-2018/macros/at-most-once.md b/src/rust-2018/macros/at-most-once.md index fb38610d..a368cbd0 100644 --- a/src/rust-2018/macros/at-most-once.md +++ b/src/rust-2018/macros/at-most-once.md @@ -1,5 +1,7 @@ # At most one repetition +![Minimum Rust version: 1.32](https://img.shields.io/badge/Minimum%20Rust%20Version-1.32-brightgreen.svg) + In Rust 2018, we have made a couple of changes to the macros-by-example syntax. 1. We have added a new Kleene operator `?` which means "at most one"