Opperations applicable to most types

The following operators and functions all come as standard for all types except error and func.

• Comparison using == and !=.
• The type function (works with func).
• The in operator (works with func).
• The literal function.
• The string function.

Let's demonstrate them in the TUI:

The in operator also works for membership of lists, sets, and tuples, as we will discuss when we introduce those types. It is an error to compare elements of different types. "walrus" == 42 gives an error and not false.

All comparison in Pipefish is by-value: structs with identical fields are equal, lists with the same elements in the same order are equal, etc.