struct
is not a function, it is a macro. You can define your own macros that uses keywords in the same way.
Racket function flag arguments
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12-10-2022 - |
문제
Racket guide introduces functions with keyword arguments:
(define (F #:keyword argument) ...)
When we use it, we need to associate certain value with the argument:
(F #:keyword 'value)
But in the same guide there is an example of keyword argument with no value:
(struct posn (x y)
#:transparent)
Is it possible to create such flag-like arguments for programmers, or it is clearly internal feature?
해결책
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