Sing Sharp - Programming language

Sing Sharp is a programming language created in 2005.

#2622on PLDB

19Years Old

Spec# is a programming language with specification language features that extends the capabilities of the C# programming language with Eiffel-like contracts, including object invariants, preconditions and postconditions. Like ESC/Java, it includes a static checking tool based on a theorem prover that is able to statically verify many of these invariants. It also includes a variety of other minor extensions to the language, such as non-null reference types. Read more on Wikipedia...

Sing Sharp Wikipedia page
Sing Sharp is a superset of Spec Sharp
Sing Sharp first developed in Microsoft Research
See also: (3 related languages)C#, Eiffel, Java

Example from Wikipedia:

static int Main(string![] args)
        requires args.Length > 0;
        ensures return == 0;
    {
        foreach(string arg in args)
        {
            Console.WriteLine(arg);
        }
        return 0;
    }