Add new example scripts.

scripts/function_decl3.rhai

@@ -6,6 +6,6 @@ fn f(a, b, c, d, e, f) {
     a - b * c - d * e - f + global::KEY
 }
 
-print("f() call should be 42:");
+let result = f(100, 5, 2, 9, 6, 32);
 
-print(f(100, 5, 2, 9, 6, 32));
+print(`result should be 42: ${result}`);

scripts/function_decl4.rhai

@@ -0,0 +1,12 @@
+// This script defines a function that acts as a method
+
+// Use 'this' to refer to the object of a method call
+fn action(x, y) {
+    this = this.abs() + x * y;      // 'this' can be modified
+}
+
+let obj = -40;
+
+obj.action(1, 2);                   // call 'action' as method
+
+print(`obj should now be 42: ${obj}`);

scripts/if2.rhai

@@ -0,0 +1,10 @@
+let a = 42;
+let b = 123;
+
+let x = if a <= b {         // if-expression
+    b - a
+} else {
+    a - b
+} * 10;
+
+print(`x should be 810: ${x}`);

scripts/switch.rhai

@@ -0,0 +1,11 @@
+let arr = [42, 123.456, "hello", true, 'x', 999, 1];
+
+for item in arr {
+    switch item {
+        42 => print("The Answer!"),
+        123.456 => print(`Floating point... ${item}`),
+        "hello" => print(`${item} world!`),
+        999 => print(`A number: ${item}`),
+        _ => print(`Something else: <${item}>`)
+    }
+}