Miscellaneous Debris - All Comments

re: VSTO for Outlook 2007 - Building the Add-in (part 2)

Empower Network Review — Sun, 12 Feb 2012 19:49:19 GMT

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re: Non-generic default values in C#? Why not?!

Timwi — Wed, 08 Feb 2012 19:10:10 GMT

Hi. This blog entry makes you appear heavily misinformed, although to be fair the comments seem to indicate that you do know your stuff, you just haven’t really worded it very well. Here are some corrections:

• default(T) is *not* for checking if a type is a value type or reference type. It is simply a way of returning a default value (one which, in technical terms, corresponds to binary zeroes).

• It is not true that default(T) can only be used on generic parameters. You can write default(int) just fine. You refer to it as a “generic keyword” but it has nothing as such to do with generics (any more than typeof() does, anyway).

• It is true that you can’t use default() on run-time types (variables of type “Type”). It should be quite clear why you can’t do that: the “Type” type is just an API, not really a feature of the C# language. The correct solution would be to have a method in the Reflection API, perhaps Type.GetDefaultValue(), which would do the equivalent of your snippet. I do wonder why such a method doesn’t exist.

• You correctly discovered that default(T) translates into the IL instruction “initobj”. However, the “initobj” opcode expects a type metadata token as an operand, so you can’t use it on a variable of type “Type”, so it can’t do any more than default(T) can. So being able to embed IL directly into your code wouldn’t help.

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re: VSTO for Outlook 2007 - Building the Add-in (part 2)

leugens — Sat, 04 Feb 2012 07:46:18 GMT

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re: VSTO for Outlook 2007 - Building the Add-in (part 2)

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re: VSTO for Outlook 2007 - Building the Add-in (part 2)

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re: A silly little C# language feature request: .! operator

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re: VSTO for Outlook 2007 - Building the Add-in (part 2)

snel geld lenen zonder bkr toetsing — Sun, 29 Jan 2012 06:50:38 GMT

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