From 855f1ff3215e76d438783d8bdf743d6cb641ff89 Mon Sep 17 00:00:00 2001 From: Ruby Date: Thu, 6 Aug 2015 19:29:03 +0100 Subject: [PATCH] Explained asterisk on & and &mut reference --- src/doc/trpl/references-and-borrowing.md | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/src/doc/trpl/references-and-borrowing.md b/src/doc/trpl/references-and-borrowing.md index d1d3063138e7..1709ac8f26bb 100644 --- a/src/doc/trpl/references-and-borrowing.md +++ b/src/doc/trpl/references-and-borrowing.md @@ -125,6 +125,10 @@ This will print `6`. We make `y` a mutable reference to `x`, then add one to the thing `y` points at. You’ll notice that `x` had to be marked `mut` as well, if it wasn’t, we couldn’t take a mutable borrow to an immutable value. +You'll also notice we added an asterisk in front of `y`, making it `*y`, +this is because y is an `&mut` reference. You'll also need to use them for +accessing and modifying `&` references as well. + Otherwise, `&mut` references are just like references. There _is_ a large difference between the two, and how they interact, though. You can tell something is fishy in the above example, because we need that extra scope, with