From 7ec80fa31c0bcb74fbe5e000015826a210a69034 Mon Sep 17 00:00:00 2001 From: FuGangqiang Date: Sat, 21 Mar 2015 23:59:30 +0800 Subject: [PATCH] add lifetime for `while` and `for` expression --- src/doc/reference.md | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/src/doc/reference.md b/src/doc/reference.md index b23a8d91069e..415ec4e4fbf0 100644 --- a/src/doc/reference.md +++ b/src/doc/reference.md @@ -3158,7 +3158,7 @@ ten_times(|j| println!("hello, {}", j)); ### While loops ```{.ebnf .gram} -while_expr : "while" no_struct_literal_expr '{' block '}' ; +while_expr : [ lifetime ':' ] "while" no_struct_literal_expr '{' block '}' ; ``` A `while` loop begins by evaluating the boolean loop conditional expression. @@ -3223,7 +3223,7 @@ A `continue` expression is only permitted in the body of a loop. ### For expressions ```{.ebnf .gram} -for_expr : "for" pat "in" no_struct_literal_expr '{' block '}' ; +for_expr : [ lifetime ':' ] "for" pat "in" no_struct_literal_expr '{' block '}' ; ``` A `for` expression is a syntactic construct for looping over elements provided