Fix the docs

README.md

@@ -203,6 +203,12 @@ pub enum Dialogue {
     ReceiveAge(ReceiveAgeState),
     ReceiveLocation(ReceiveLocationState),
 }
+
+impl Default for Dialogue {
+    fn default() -> Self {
+        Self::Start(StartState)
+    }
+}
 ```
 
 ([dialogue_bot/src/dialogue/states/start.rs](https://github.com/teloxide/teloxide/blob/master/examples/dialogue_bot/src/dialogue/states/start.rs))

examples/dialogue_bot/Cargo.toml

@@ -15,7 +15,6 @@ frunk-core = { git = "https://github.com/Hirrolot/frunk", branch = "append-to-hl
 
 pretty_env_logger = "0.4.0"
 futures = "0.3.5"
-smart-default = "0.6.0"
 derive_more = "0.99.9"
 teloxide = { path = "../../", features = ["frunk"] }
 teloxide-macros = { git = "http://github.com/teloxide/teloxide-macros", branch = "master" }

examples/dialogue_bot/src/dialogue/mod.rs

@@ -3,13 +3,19 @@ mod states;
 use crate::dialogue::states::{
     ReceiveAgeState, ReceiveFullNameState, ReceiveLocationState, StartState,
 };
+use derive_more::From;
 use teloxide_macros::Transition;
 
-#[derive(Transition, SmartDefault, From)]
+#[derive(Transition, From)]
 pub enum Dialogue {
-    #[default]
     Start(StartState),
     ReceiveFullName(ReceiveFullNameState),
     ReceiveAge(ReceiveAgeState),
     ReceiveLocation(ReceiveLocationState),
 }
+
+impl Default for Dialogue {
+    fn default() -> Self {
+        Self::Start(StartState)
+    }
+}

examples/dialogue_bot/src/dialogue/states/receive_age.rs

@@ -2,6 +2,7 @@ use crate::dialogue::{
     states::receive_location::ReceiveLocationState, Dialogue,
 };
 use teloxide::prelude::*;
+use teloxide_macros::teloxide;
 
 #[derive(Generic)]
 pub struct ReceiveAgeState {

examples/dialogue_bot/src/dialogue/states/receive_full_name.rs

@@ -1,5 +1,6 @@
 use crate::dialogue::{states::receive_age::ReceiveAgeState, Dialogue};
 use teloxide::prelude::*;
+use teloxide_macros::teloxide;
 
 #[derive(Generic)]
 pub struct ReceiveFullNameState;

examples/dialogue_bot/src/dialogue/states/receive_location.rs

@@ -1,5 +1,6 @@
 use crate::dialogue::Dialogue;
 use teloxide::prelude::*;
+use teloxide_macros::teloxide;
 
 #[derive(Generic)]
 pub struct ReceiveLocationState {

examples/dialogue_bot/src/dialogue/states/start.rs

@@ -1,5 +1,6 @@
 use crate::dialogue::{states::ReceiveFullNameState, Dialogue};
 use teloxide::prelude::*;
+use teloxide_macros::teloxide;
 
 #[derive(Default)]
 pub struct StartState;

examples/dialogue_bot/src/main.rs

@@ -17,15 +17,8 @@
 #![allow(clippy::trivial_regex)]
 #![allow(dead_code)]
 
-#[macro_use]
-extern crate smart_default;
-#[macro_use]
-extern crate derive_more;
 #[macro_use]
 extern crate frunk;
-extern crate frunk_core;
-#[macro_use]
-extern crate teloxide_macros;
 
 mod dialogue;
 

src/dispatching/dialogue/mod.rs

@@ -88,7 +88,8 @@
 //!                 // No panic because of std::convert::Infallible.
 //!                 let dialogue = dialogue.unwrap();
 //!                 dialogue
-//!                     .react(cx)
+//!                     // Instead of () you can pass an arbitrary value, see below.
+//!                     .react(cx, ())
 //!                     .await
 //!                     .expect("Something wrong with the bot!")
 //!             },
@@ -103,6 +104,10 @@
 //!  - `#[derive(Transition)]` implements [`Transition`] for `D`, if all the
 //!    variants implement [`SubTransition`].
 //!
+//! `()` in `.react(cx, ())` is an arbitrary value, which you can pass into
+//! subtransitions. Just append `ans: T` to the parameters of the
+//! subtransitions to pass a differen type.
+//!
 //! See [examples/dialogue_bot] as a real example.
 //!
 //! [`Transition`]: crate::dispatching::dialogue::Transition