HackerNews Summary (2023-06-16 06AM)

Source: A LiveView is a Process

Summary
Phoenix LiveView is different from other front-end frameworks as it operates as a process in Elixir, which makes it cheap, scalable and efficient. LiveView follows a specific lifecycle and handles events, updates state, and renders updates on a page as diffs.

Fact

💻 In Elixir and Erlang, processes are green threads or actors; each process needs ~300 words of memory, takes microseconds to start, and is incredibly cheap.

🔄 A process can execute code, has a mailbox where other processes can send messages, and can also send messages. Each process is sequential and can only handle one message at a time.

🌡️ An idle process won’t consume resources. While using a Task, it is okay to do a costly calculation because those processes don’t expect more messages.

🧬 LiveView follows a specific lifecycle, where assigns is the state and event is a message. Every user and params event is a message being handled by LiveView callbacks.

Source: HMP Hewell: Prison chess clubs helping rehabilitate inmates

Summary
Chess can be used to break down barriers and connect people.

Facts

🧑‍🤝‍🧑 Chess can connect people and break down barriers.

🤝 Officers and prisoners can play chess together.

🌟 Chess has helped many people to thrive.

Leave a Reply Cancel reply