Personally I prefer StackOverflow. SO is a wiki and it's likely my question and others' comments and answers will help someone else in the future.
With any chat interface, it feels like your question may be lost if it's not immediately answered and it's often hard to follow discussions with multiple people chatting. With SO I will spend time to try and formulate a clear question. In general with slack or any other chat I may feel out the room first as it will be a waste of my time writing a detailed question if no one is around to answer.
Perhaps some sort of SO integration into Slack would be the best of both worlds?
While Slack is the most popular forum, there's also Clojureverse.org, which aims to be a more threaded and permanent repository of Clojure discussions and knowledge.
With any chat interface, it feels like your question may be lost if it's not immediately answered and it's often hard to follow discussions with multiple people chatting. With SO I will spend time to try and formulate a clear question. In general with slack or any other chat I may feel out the room first as it will be a waste of my time writing a detailed question if no one is around to answer.
Perhaps some sort of SO integration into Slack would be the best of both worlds?