19 lines
641 B
Racket
19 lines
641 B
Racket
#lang racket/base
|
|
|
|
(provide bytes-append* bytes-join)
|
|
|
|
(define bytes-append*
|
|
(case-lambda [(strs) (apply bytes-append strs)] ; optimize common case
|
|
[(str . strss) (apply bytes-append (apply list* str strss))]))
|
|
|
|
(require (only-in racket/list add-between))
|
|
|
|
(define (bytes-join strs sep)
|
|
(cond [(not (and (list? strs) (andmap bytes? strs)))
|
|
(raise-argument-error 'bytes-join "(listof bytes?)" strs)]
|
|
[(not (bytes? sep))
|
|
(raise-argument-error 'bytes-join "bytes?" sep)]
|
|
[(null? strs) #""]
|
|
[(null? (cdr strs)) (car strs)]
|
|
[else (apply bytes-append (add-between strs sep))]))
|