Mojo decorators
A Mojo decorator is a higher-order
function that modifies or
extends the behavior of a struct, a function, or some other code. Instead of
actually calling the higher-order function, you simply add the decorator (such
as the @value decorator) above your code (such as a struct). The Mojo
compiler then uses the decorator function to modify your code at compile time.
The creation of custom decorators is not yet supported. The available ones are built directly into the compiler.
The following pages describe each built-in decorator with examples.
@always_inline
Copies the body of a function directly into the body of the calling function.
@__copy_capture
Captures register-passable typed values by copy.
@nonmaterializable
Declares that a type should exist only in the parameter domain.
@parameter
Executes a function or if statement at compile time.
@register_passable
Declares that a type should be passed in machine registers.
@staticmethod
Declares a struct method as static.
@value
Generates boilerplate lifecycle methods for a struct.