1 files changed, 93 insertions, 0 deletions
diff --git a/src/helloworld.d b/src/helloworld.d
new file mode 100755
index 0000000..c3e6843
--- /dev/null
+++ b/src/helloworld.d
@@ -0,0 +1,93 @@
+/* sh style script syntax is supported */
+
+/* Hello World in D
+   To compile:
+     dmd hello.d
+   or to optimize:
+     dmd -O -inline -release hello.d
+*/
+
+import std.stdio;
+
+void main(char[][] args)
+{
+    writefln("Hello World, Reloaded");
+
+    // auto type inference and built-in foreach
+    foreach (argc, argv; args)
+    {
+        // Object Oriented Programming
+        CmdLin cl = new CmdLin(argc, argv);
+        // Improved typesafe printf
+        writefln(cl.argnum, cl.suffix, " arg: %s", cl.argv);
+        // Automatic or explicit memory management
+        delete cl;
+    }
+
+    // Nested structs and classes
+    struct specs
+    {
+        // all members automatically initialized
+        int count, allocated;
+    }
+
+    // Nested functions can refer to outer
+    // variables like args
+    specs argspecs()
+    {
+        specs* s = new specs;
+        // no need for '->'
+        s.count = args.length;		   // get length of array with .length
+        s.allocated = typeof(args).sizeof; // built-in native type properties
+        foreach (argv; args)
+            s.allocated += argv.length * typeof(argv[0]).sizeof;
+        return *s;
+    }
+
+    // built-in string and common string operations
+    writefln("argc = %d, " ~ "allocated = %d",
+	argspecs().count, argspecs().allocated);
+}
+
+class CmdLin
+{
+    private int _argc;
+    private char[] _argv;
+
+public:
+    this(int argc, char[] argv)	// constructor
+    {
+        _argc = argc;
+        _argv = argv;
+    }
+
+    int argnum()
+    {
+        return _argc + 1;
+    }
+
+    char[] argv()
+    {
+        return _argv;
+    }
+
+    char[] suffix()
+    {
+        char[] suffix = "th";
+        switch (_argc)
+        {
+          case 0:
+            suffix = "st";
+            break;
+          case 1:
+            suffix = "nd";
+            break;
+          case 2:
+            suffix = "rd";
+            break;
+          default:
+	    break;
+        }
+        return suffix;
+    }
+}