IO is the type for values whose evaluation bears the possibility of causing side effects, such as printing text, reading text input from the user, reading or writing to files, or connecting to remote computers. This will be explained in much more depth in the chapter on IO.
IO is the type for values whose evaluation bears the possibility of causing side effects, such as printing text, reading text input from the user, reading or writing to files, or connecting to remote computers. This will be explained in much more depth in the chapter on IO.