1 files changed, 54 insertions, 0 deletions
diff --git a/Examples/guile/std_vector/runme.scm b/Examples/guile/std_vector/runme.scm
new file mode 100644
index 0000000..77443a1
--- /dev/null
+++ b/Examples/guile/std_vector/runme.scm
@@ -0,0 +1,54 @@
+;; run with mzscheme -r example.scm
+
+(use-modules (example))
+
+; repeatedly invoke a procedure with v and an index as arguments
+(define (with-vector v proc size-proc)
+  (let ((size (size-proc v)))
+    (define (with-vector-item v i)
+      (if (< i size)
+          (begin
+            (proc v i)
+            (with-vector-item v (+ i 1)))))
+    (with-vector-item v 0)))
+
+(define (with-IntVector v proc)
+  (with-vector v proc IntVector-length))
+(define (with-DoubleVector v proc)
+  (with-vector v proc DoubleVector-length))
+
+(define (print-DoubleVector v)
+  (with-DoubleVector v (lambda (v i) (display (DoubleVector-ref v i)) 
+                                     (display " ")))
+  (newline))
+
+
+; Call average with a Scheme list...
+
+(display (average '(1 2 3 4)))
+(newline)
+
+; ... or a wrapped std::vector<int>
+(define v (new-IntVector 4))
+(with-IntVector v (lambda (v i) (IntVector-set! v i (+ i 1))))
+(display (average v))
+(newline)
+(delete-IntVector v)
+
+; half will return a Scheme vector.
+; Call it with a Scheme vector...
+
+(display (half #(1 1.5 2 2.5 3)))
+(newline)
+
+; ... or a wrapped std::vector<double>
+(define v (new-DoubleVector))
+(map (lambda (i) (DoubleVector-push! v i)) '(1 2 3 4))
+(display (half v))
+(newline)
+
+; now halve a wrapped std::vector<double> in place
+(halve-in-place v)
+(print-DoubleVector v)
+(delete-DoubleVector v)
+