From 5329767b0e8cc8351ed982c2850068462488f0c9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BE=90=E6=B6=9B?= <midnite@outlook.com>
Date: Fri, 18 Mar 2022 16:04:30 +0800
Subject: [PATCH] =?UTF-8?q?fix:=E4=BF=AE=E6=AD=A3=E4=B8=80=E5=A4=84?=
 =?UTF-8?q?=E4=BB=A3=E7=A0=81=E9=94=99=E8=AF=AF=E3=80=82?=
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---
 source/_posts/rust-macro.md | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/source/_posts/rust-macro.md b/source/_posts/rust-macro.md
index 9d5ef0c..4f2f539 100644
--- a/source/_posts/rust-macro.md
+++ b/source/_posts/rust-macro.md
@@ -234,7 +234,8 @@ mod client;
 
 ```rust
 macro_rules! calculate {
-  (eval $e:expr store to $a:ident) => {{
+  // 注意，expr类型描述后面可以接的内容限制
+  (eval $e:expr, store to $a:ident) => {{
     let $a = $e;
   }}
 }
@@ -246,7 +247,7 @@ macro_rules! calculate {
 fn main() {
   let variable: usize = 0;
   calculate! {
-    eval (100 + 50) / (29 * 16) store to variable
+    eval (100 + 50) / (29 * 16), store to variable
   }
 }
 ```