Define a primitive data type: Difference between revisions

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   val test = (TinyInt.lower to TinyInt.upper).map(n => TinyInt(n.toByte))</lang>
+=={{header|Sidef}}==
+<lang ruby>class MyInt(value) {
+    def min = 1;
+    def max = 10;
+    method new(value is Number) {
+        (value > max) || (value < min) && (
+            die "Invalid value '#{value}': must be between #{min} and #{max}";
+        );
+        !value.is_int && (
+            die "Invalid value '#{value}': must be an integer";
+        );
+    }
+    method new(value) {
+        die "Invalid value '#{value}'; expected a number";
+    }
+    method AUTOLOAD(name, *args) {
+        var result = value.(name)(args...);
+        result.is_a(Number) &&
+            return MyInt(result.int);
+        result;
+    }
+}
+#
+## Tests:
+#
+var a = MyInt(2);    # creates a new object of type `MyInt`
+a += 7;              # adds 7 to a
+say a;               # => 9
+say a/2;             # => 4
+var b = (a - 3);     # b is of type `MyInt`
+say b;               # => 6
+say a.to_hex;        # => "0x9" -- an hexadecimal string
+say a+b;            # error: Invalid value '15'; must be between 1 and 10</lang>
 =={{header|Tcl}}==