PIDs in

About PIDs

Each Elixir process has its own unique identifier - a PID (process identifier).

• PIDs are their own data type.
  • You can check if a variable is a PID with is_pid/1
• You can get the current process's PID with self().
• PIDs function as mailbox addresses - if you have a process's PID, you can send a message to that process.
• PIDs are usually created indirectly, as a return value of functions that create new processes, like spawn.
  • PIDs should not be created directly by the programmer. If it were required, Erlang has a list_to_pid/1 function.