From b1294088059fe22d1a05d0f9637fdd598795d8ea Mon Sep 17 00:00:00 2001 From: Robby Zambito Date: Sun, 12 Feb 2023 22:46:48 -0500 Subject: Add json-object-contains-key?, json-list-length, and json-key-not-found. Update README accordingly and with add examples. --- lib/zambyte/meta/macduffie.scm | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) (limited to 'lib/zambyte/meta/macduffie.scm') diff --git a/lib/zambyte/meta/macduffie.scm b/lib/zambyte/meta/macduffie.scm index f80ea18..8a42183 100644 --- a/lib/zambyte/meta/macduffie.scm +++ b/lib/zambyte/meta/macduffie.scm @@ -2,9 +2,6 @@ (json-null md:json-null)) (srfi 69)) (begin - (define string->json json-read-string) - (define json->string json-write-string) - (define (json-object . pairs) (alist->hash-table pairs)) @@ -13,7 +10,16 @@ (define json-object? hash-table?) (define json-list? list?) ;; json-null? already defined in macduffie json - (define json-object-ref hash-table-ref) + (define json-object-contains-key? hash-table-exists?) + (define string->json json-read-string) + (define json->string json-write-string) + + (define (json-object-ref json key) + (or (and (hash-table-exists? json key) + (hash-table-ref json key)) + ((json-key-not-found)))) + (define json-list-ref list-ref) + (define json-list-length length) (define json-object->alist hash-table->alist) (define json-list->list values)) -- cgit