C# - Basic question: What is '?' ?
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Published on 2010-04-23T14:34:16Z
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2010/04/23
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c#
Hi,
I'm wondering what ?
means in C# ?
I'm seeing things like: DateTime?
or int?
. I suppose this is C# specific to C# 4.0?
I can't look for it in Google because I don't know the name of this thing.
The problem is I'm using DateTime and I have a lot of cast errors (from DateTime
to DateTime?
).
Thank you
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