[IronPython] C#, Types and IronPython

Nicholas Riley njriley at uiuc.edu
Sun Mar 11 15:56:32 CET 2007

On Sun, Mar 11, 2007 at 02:27:11PM +0000, Michael Foord wrote:
> What object does 'typeof(int)' (in C# *not* IronPython) return. I guess 
> it is not System.Int32 !

Indeed it is; I'm not sure why you're confused about this when a
one-line C# program will give you the answer :-)  typeof(int) is
converted by the C# compiler into the following IL:

ldtoken    [mscorlib]System.Int32
call       class [mscorlib]System.Type [mscorlib]System.Type::GetTypeFromHandle(valuetype [mscorlib]System.RuntimeTypeHandle)

which makes it pretty clear that System.Int32 is specified at compile

> Is there a common base class for the C# number types ?

No; however there are several common interfaces these types implement,
such as IConvertible.

Nicholas Riley <njriley at uiuc.edu> | <http://www.uiuc.edu/ph/www/njriley>

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