Changes from Version 1 of FinalExample

Author:

jcc7 (IP: 68.97.93.38)

Timestamp:

11/12/05 00:03:33 (19 years ago)

Comment:

--

FinalExample

@@ +1 @@
+= final =
+
+''Part of'' KeywordsCategory
+
+== Description ==
+
+Shows the usage of the final keyword on a class.
+
+== Example ==
+
+{{{
+#!d
+/* 
+This example won't compile with either "final" compiled in: 
+final.d(34): function toString cannot override final function toString  
+*/ 
+
+
+/+final+/ class A
+{
+    private char[] name;
+    
+    /+final+/ char[] toString()
+    {
+        return name;
+    }
+    
+    this(char[] s)
+    {
+        name = s;
+        printf("'%.*s' created\n", name);
+    }
+    ~this()
+    {
+        printf("'%.*s' destroyed\n", name);
+    }
+}
+
+
+class B: A /+ If class A is final this wouldn't work. +/
+{
+    char[] name;
+
+    char[] toString() /* If this method were final in class A, this would cause a compile error. */
+    {
+        return name;
+    }
+
+    this(char[] s)
+    {
+        super(s);
+    }
+    ~this()
+    {
+        printf("'%.*s' destroyed\n", name);
+    }
+}
+
+
+void main()
+{    
+}
+}}}
+
+== More Information ==
+
+Apparently similar to [http://www.glenmccl.com/perfj_025.htm Java's final].
+
+
+== Source ==
+
+|| Link || http://www.dsource.org/tutorials/index.php?show_example=74 ||
+|| Posted by || jcc7 ||
+|| Date/Time || Wed May 19, 2004 6:01 pm ||