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| -rw-r--r-- | src/doc/reference.md | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/doc/reference.md b/src/doc/reference.md index 671a3390d99..bdd4ba026d6 100644 --- a/src/doc/reference.md +++ b/src/doc/reference.md @@ -3529,13 +3529,14 @@ more of the closure traits: * `FnMut` : The closure can be called multiple times as mutable. A closure called as - `FnMut` can mutate values from its environment. `FnMut` implies - `FnOnce`. + `FnMut` can mutate values from its environment. `FnMut` inherits from + `FnOnce` (i.e. anything implementing `FnMut` also implements `FnOnce`). * `Fn` : The closure can be called multiple times through a shared reference. A closure called as `Fn` can neither move out from nor mutate values - from its environment. `Fn` implies `FnMut` and `FnOnce`. + from its environment. `Fn` inherits from `FnMut`, which itself + inherits from `FnOnce`. ### Trait objects |