Adding Dynamic Types to C#

9 years 5 months ago
Adding Dynamic Types to C#
Developers using statically typed languages such as C and Java are increasingly having to interoperate with APIs and object models defined in dynamic languages. This impedance mismatch results in code that is difficult to understand, awkward to analyze, and expensive to maintain. In this paper we describe new features in C 4.0 that support the safe combination of dynamically and statically typed code by deferring type checking of program fragments with static type dynamic until runtime. When executed, these dynamic code fragments are type-checked and resolved using the same rules as statically typed code. We formalize these features in a core fragment of C and prove important safety properties. In particular, we show that subtyping remains transitive.
Gavin M. Bierman, Erik Meijer, Mads Torgersen
Added 12 Oct 2010
Updated 12 Oct 2010
Type Conference
Year 2010
Authors Gavin M. Bierman, Erik Meijer, Mads Torgersen
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