How to resolve the algorithm Define a primitive data type step by step in the Racket programming language

Published on 12 May 2024 09:40 PM
#Racket

How to resolve the algorithm Define a primitive data type step by step in the Racket programming language

Table of Contents

Problem Statement

Demonstrate how to define a type that behaves like an integer but has a lowest valid value of 1 and a highest valid value of 10. Include all bounds checking you need to write, or explain how the compiler or interpreter creates those bounds checks for you.

Let's start with the solution:

Step by Step solution about How to resolve the algorithm Define a primitive data type step by step in the Racket programming language

Source code in the racket programming language

#lang racket

(provide (contract-out [x 1-to-10/c]))

(define 1-to-10/c (between/c 1 10))

(define x 5)


#lang typed/racket

(define-type 1UpTo10 (U 1 2 3 4 5 6 7 8 9 10))

;; type-checks
(: x 1UpTo10)
(define x 3)

;; does not type-check
(: y 1UpTo10)
(define y 18)

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