diff options
| -rw-r--r-- | src/doc/style-guide/src/expressions.md | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/doc/style-guide/src/expressions.md b/src/doc/style-guide/src/expressions.md index 8271b42da4c..f5e37b6c46f 100644 --- a/src/doc/style-guide/src/expressions.md +++ b/src/doc/style-guide/src/expressions.md @@ -288,7 +288,8 @@ and other assignment operators such as `+=` or `*=`). For comparison operators, because for `T op U`, `&T op &U` is also implemented: if you have `t: &T`, and `u: U`, prefer `*t op u` to `t op &u`. In general, -within expressions, prefer dereferencing to taking references. +within expressions, prefer dereferencing to taking references, unless necessary +(e.g. to avoid an unnecessarily expensive operation). Use parentheses liberally, do not necessarily elide them due to precedence. Tools should not automatically insert or remove parentheses. Do not use spaces |