Trying to use not-lambda function with repl results in runtime rror

[Amomum]

I'm trying to replicate ngrok ping pong bot:

    teloxide::repl_with_listener(
        bot,
        |msg: Message, bot: AutoSend<Bot>| async move {
            bot.send_message(msg.chat.id, "pong").await?;
            respond(())
        },
        listener,
    )

but using function instead of a lambda. Here's the function signature:
async fn handle_message( message : Message, bot: AutoSend<Bot> ) -> teloxide::requests::ResponseResult<()>
I think that matches with lambda signature from example..

and here's how I use repl:

    teloxide::repl_with_listener(
        bot,
        handle_message,
        listener
    )

This compiles but gives runtime error:

thread 'tokio-runtime-worker' panicked at 'teloxide_core::adaptors::auto_send::AutoSend<teloxide_core::bot::Bot> was requested, but not provided. Available types:
    teloxide_core::bot::Bot
    teloxide_core::types::message::Message
    teloxide_core::types::update::Update
    teloxide_core::types::me::Me
', .cargo/registry/src/github.com-1ecc6299db9ec823/dptree-0.3.0/src/di.rs:164:17

What am I doing wrong?

[Hirrolot]

Does your example work with the lambda function?

[Amomum]

Hm, no, it does not. Interesting!
Can this be some kind of version incompatibility issue? I was upgrading from teloxide 0.3, struggling with a lot of changes

[WaffleLapkin]

I think the problem isn't the lambda/function, but instead it's that the bot types that you are giving to the repl and then requesting from it don't match:

teloxide_core::adaptors::auto_send::AutoSend<teloxide_core::bot::Bot> was requested, but not provided.
Available types: teloxide_core::bot::Bot

You either need to make bot: Bot argument or use the auto send adapter:

let bot = bot.auto_send();

[Amomum]

Well, my bot was let bot = Bot::new(token);.. but passing bot.auto_send() to the repl worked, thanks a lot!

I'm really struggling to understand the generic wizardry that allows passing of a function with a wrong signature ._.

[Hirrolot]

Did you read https://docs.rs/teloxide/latest/teloxide/dispatching/index.html? I hope it explains the dispatch logic a little bit.

[Amomum]

No, but I'll read it now! Thank you so much!

[Hirrolot]

FYI: teloxide v0.11.0 has just been released; now you no longer need to use AutoSend. You can remove .auto_send() while constructing your bot and replace all AutoSend<Bot> with just Bot.

[Amomum]

@Hirrolot oh wow! Nice timing 👍