Small language fix in subtyping.md (#399)

2 years ago · 2d3e6f67d5
parent bd1829d235
commit 2d3e6f67d5
1 changed files with 1 additions and 1 deletions
--- a/src/subtyping.md
+++ b/src/subtyping.md
@ -339,7 +339,7 @@ lifetimes to be covariant: as soon as you try to stuff them in something like a
 mutable reference, they inherit invariance and you're prevented from doing anything
 bad.

-However Box makes it easier to focus on by-value aspect of references that we
+However, Box makes it easier to focus on the by-value aspect of references that we
 partially glossed over.

 Unlike a lot of languages which allow values to be freely aliased at all times,