feat dart example

[isopen]

No description provided.

[triedcatched]

I'm not sure if I'm doing something wrong. The timeout in client_receive is not working. Even if I set a higher value (eg: 60.0), it immediately returns null if there is no update instead of waiting for 60 seconds.

cbe2680#diff-169e6dc747a8a5fae6bb7281d2f94353R27

[isopen]

https://gist.githubusercontent.com/isopen/e9a60e69616ccc2a8a5a88149c79e48d/raw/277ae01d06993987bf7dd51915b5f912a7b12030/gistfile1.txt

In this case, you can remove check of null.

In this example, there is a check of nil: https://github.com/tdlib/td/blob/master/example/python/tdjson_example.py (in main body of the program @levlam)

Dart is not stable. It looks like a separate kingdom. Try updating Dart to the stable version.

You have a great example. Need to move Lviv interface TdApi on Java. We may not use Flutter in favor of Kotlin.