Added for-each functions

scheme/base.sld

@@ -48,6 +48,7 @@
     vector->list
     vector->string
     vector-map
+    vector-for-each
     make-string
     string
     string-copy
@@ -56,6 +57,7 @@
     string->list
     string->vector
     string-map
+    string-for-each
     make-parameter
     current-output-port
     current-input-port
@@ -266,8 +268,12 @@
         (loop start)))
     (define (string-map func str)
       (list->string (map func (string->list str))))
+    (define (string-for-each func str)
+      (for-each func (string->list str)))
     (define (vector-map func vec)
       (list->vector (map func (vector->list vec)))) 
+    (define (vector-for-each func vec)
+      (for-each func (vector->list vec)))
     (define (vector-append . vecs)
       (list->vector
         (apply append (map vector->list vecs))))

tests/unit-tests.scm

@@ -148,6 +148,11 @@
 (define a "12345")
 (define b (string-copy "abcde"))
 (assert:equal "string-copy!" (string-copy! b 1 a 0 2) "a12de")
+(let ((v '()))
+  (string-for-each
+    (lambda (c) (set! v (cons (char->integer c) v)))
+    "abcde")
+  (assert:equal "string-for-each" v '(101 100 99 98 97)))
 
 ;; Recursion example:
 (letrec ((fnc (lambda (i)