diff --git a/src/app.rs b/src/app.rs
index ae510621c..e9b10081b 100644
--- a/src/app.rs
+++ b/src/app.rs
@@ -79,6 +79,27 @@ where
     /// multiple times. If you want to share state between different
     /// threads, a shared object should be used, e.g. `Arc`. Application
     /// state does not need to be `Send` or `Sync`.
+    ///
+    /// ```rust
+    /// use std::cell::Cell;
+    /// use actix_web::{web, State, App};
+    ///
+    /// struct MyState {
+    ///     counter: Cell<usize>,
+    /// }
+    ///
+    /// fn index(state: State<MyState>) {
+    ///     state.counter.set(state.counter.get() + 1);
+    /// }
+    ///
+    /// fn main() {
+    ///     let app = App::new()
+    ///         .state(MyState{ counter: Cell::new(0) })
+    ///         .resource(
+    ///             "/index.html",
+    ///             |r| r.route(web::get().to(index)));
+    /// }
+    /// ```
     pub fn state<S: 'static>(mut self, state: S) -> Self {
         self.state.push(Box::new(State::new(state)));
         self
diff --git a/src/extractor.rs b/src/extractor.rs
index 04dfb81ae..ea7681b0e 100644
--- a/src/extractor.rs
+++ b/src/extractor.rs
@@ -938,66 +938,21 @@ impl<P> FromRequest<P> for () {
     }
 }
 
+#[rustfmt::skip]
+mod m {
+    use super::*;
+
 tuple_from_req!(TupleFromRequest1, (0, A));
 tuple_from_req!(TupleFromRequest2, (0, A), (1, B));
 tuple_from_req!(TupleFromRequest3, (0, A), (1, B), (2, C));
 tuple_from_req!(TupleFromRequest4, (0, A), (1, B), (2, C), (3, D));
 tuple_from_req!(TupleFromRequest5, (0, A), (1, B), (2, C), (3, D), (4, E));
-tuple_from_req!(
-    TupleFromRequest6,
-    (0, A),
-    (1, B),
-    (2, C),
-    (3, D),
-    (4, E),
-    (5, F)
-);
-tuple_from_req!(
-    TupleFromRequest7,
-    (0, A),
-    (1, B),
-    (2, C),
-    (3, D),
-    (4, E),
-    (5, F),
-    (6, G)
-);
-tuple_from_req!(
-    TupleFromRequest8,
-    (0, A),
-    (1, B),
-    (2, C),
-    (3, D),
-    (4, E),
-    (5, F),
-    (6, G),
-    (7, H)
-);
-tuple_from_req!(
-    TupleFromRequest9,
-    (0, A),
-    (1, B),
-    (2, C),
-    (3, D),
-    (4, E),
-    (5, F),
-    (6, G),
-    (7, H),
-    (8, I)
-);
-tuple_from_req!(
-    TupleFromRequest10,
-    (0, A),
-    (1, B),
-    (2, C),
-    (3, D),
-    (4, E),
-    (5, F),
-    (6, G),
-    (7, H),
-    (8, I),
-    (9, J)
-);
+tuple_from_req!(TupleFromRequest6, (0, A), (1, B), (2, C), (3, D), (4, E), (5, F));
+tuple_from_req!(TupleFromRequest7, (0, A), (1, B), (2, C), (3, D), (4, E), (5, F), (6, G));
+tuple_from_req!(TupleFromRequest8, (0, A), (1, B), (2, C), (3, D), (4, E), (5, F), (6, G), (7, H));
+tuple_from_req!(TupleFromRequest9, (0, A), (1, B), (2, C), (3, D), (4, E), (5, F), (6, G), (7, H), (8, I));
+tuple_from_req!(TupleFromRequest10, (0, A), (1, B), (2, C), (3, D), (4, E), (5, F), (6, G), (7, H), (8, I), (9, J));
+}
 
 #[cfg(test)]
 mod tests {