sample-code/ascii: Use as casting to print the entire printable ASCII range

sample-code/ascii.cl

@@ -0,0 +1,28 @@
+//! Prints out the characters in the ASCII printable range
+//! in the format of a hex-dump
+
+// TODO: Convenient stuff like this in the stdlib
+const HEX_LUT: [char; 16] = [
+    '0', '1', '2', '3', //
+    '4', '5', '6', '7', //
+    '8', '9', 'a', 'b', //
+    'c', 'd', 'e', 'f', //
+];
+
+fn ascii() {
+    for row in 0..6 {
+        for col in 0..16 {
+            if col == 8 {
+                print(' ')
+            }
+            let i = 0x20 + row * 16 + col
+            print(HEX_LUT[(i >> 4) & 0xf], HEX_LUT[i & 0xf], ' ')
+        }
+        print(" |")
+        for col in 0..16 {
+            let i = 0x20 + row * 16 + col
+            print(i as char)
+        }
+        println("|")
+    }
+}