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-rw-r--r--dict.scm50
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-#!r6rs
-;; Experimental python-like dictionary. Import this qualified, eg:
-;; (import (prefix (dict) dict/))
-;; or
-;; (import (prefix (dict) dict.))
-(library (dict (2))
- (export
- empty new dict dict? keys vals contains?
- set get del update map)
- (import
- (rnrs base)
- (srfi srfi-69))
-
- (define (empty)
- (make-hash-table))
-
- (define (new tuples)
- (let ([dict (make-hash-table)])
- (map (lambda (k . v) (hash-table-set! dict k v)) tuples)
- dict))
-
- (define (dict? dict)
- (hash-table? dict))
-
- (define (keys dict)
- (hash-table-keys dict))
-
- (define (vals dict)
- (hash-table-values dict))
-
- (define (len dict)
- (hash-table-size dict))
-
- (define (contains? dict key)
- (hash-table-exists? dict key))
-
- (define (set dict key value)
- (hash-table-set! dict key value))
-
- (define (get dict key)
- (hash-table-ref dict key #f))
-
- (define (del dict key)
- (hash-table-delete! dict key))
-
- (define (update dict key func)
- (hash-table-update! dict key func (lambda () '())))
-
- (define (map func dict)
- (hash-table-walk dict func)))