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I understand that IronPython is an implementation of Python on the .NET platform just like IronRuby is an implementation of Ruby and F# is more or less OCaml.
What I can’t seem to grasp is whether these languages perform closer to their ‘ancestors’ or closer to something like C# in terms of speed. For example, is IronPython somehow ‘compiled’ down to the same bytecode used by C# and, therefore, will run just as fast?
IronPython and IronRuby are built on top of the DLR — dynamic language runtime — and are compiled to CIL (the bytecode used by .NET) on the fly. They’re slower than C# but faaaaaaar faster than their non-.NET counterparts. There aren’t any decent benchmarks out there, to my knowledge, but you’ll see the difference.