Added an OS based random number generator (RNG). (0.37.11)

examples/error/byte_for_demo.fun

@@ -0,0 +1,68 @@
+#!/usr/bin/env fun
+
+/*
+ * This file is part of the Fun programming language.
+ * https://fun-lang.xyz/
+ *
+ * Copyright 2025 Johannes Findeisen <you@hanez.org>
+ * Licensed under the terms of the Apache-2.0 license.
+ * https://opensource.org/license/apache-2-0
+ */
+
+// Byte + for-loop demonstration
+
+print("=== byte with hex literal and clamping ===")
+
+byte b = 0x1223       // 0x1223 -> 0x23 after 8-bit clamp
+print(b)              // -> 35
+b = 0xFF
+print(b)              // -> 255
+b = 0x1FF            // 0x1FF -> 0xFF after clamp
+print(b)              // -> 255
+
+print("")
+print("=== for-loop reassigning a byte variable (shows clamping near the top end) ===")
+
+byte acc = 0
+for i in range(250, 260)
+  acc = i           // will clamp at 255
+  print(acc)
+
+print("")
+print("=== dynamic vs typed ===")
+
+x = 0xAB
+print(typeof(x))     // -> "Number"
+x = "now string"     // dynamic variable can change type
+print(typeof(x))     // -> "String"
+
+// Typed byte must remain numeric (uint8):
+// b = "oops"        // Uncomment to see a runtime type error
+
+/* Expected output:
+=== byte with hex literal and clamping ===
+OverflowError: value out of range for uint8
+*/
+
+/* Expected output (OLD):
+=== byte with hex literal and clamping ===
+255
+255
+255
+
+=== for-loop reassigning a byte variable (shows clamping near the top end) ===
+250
+251
+252
+253
+254
+255
+255
+255
+255
+255
+
+=== dynamic vs typed ===
+Number
+String
+*/