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What is the purpose of a question mark after a type (for example: int? myVariable)?

...value type, plus an additional null value. For example, a Nullable<Int32>, pronounced "Nullable of Int32," can be assigned any value from -2147483648 to 2147483647, or it can be assigned the null value. A Nullable<bool> can be assigned the values true, false, or null. The ability...
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Git: which is the default configured remote for branch?

... 231 Track the remote branch You can specify the default remote repository for pushing and pulling ...
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Wait for a void async method

... tier1 5,58866 gold badges3939 silver badges6666 bronze badges answered Nov 30 '12 at 2:17 Rohit SharmaRohit Sharma ...
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How to insert a new line in Linux shell script? [duplicate]

... answered Dec 12 '13 at 8:01 janosjanos 105k1919 gold badges183183 silver badges202202 bronze badges ...
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What are these attributes: `aria-labelledby` and `aria-hidden`

... | edited Sep 21 '13 at 13:47 answered Sep 21 '13 at 13:40 ...
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What guarantees are there on the run-time complexity (Big-O) of LINQ methods?

... answered May 9 '10 at 23:16 AaronaughtAaronaught 114k2323 gold badges247247 silver badges326326 bronze badges ...
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How do I find the next commit in git? (child/children of ref)

...ay in time, use something like git log --reverse --ancestry-path 894e8b4e93d8f3^..master where 894e8b4e93d8f3 is the first commit you want to show. share | improve this answer | ...
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How to find a parent with a known class in jQuery?

... answered Mar 17 '11 at 0:31 SLaksSLaks 770k161161 gold badges17711771 silver badges18631863 bronze badges ...
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Should you commit .gitignore into the Git repos?

... answered Apr 23 '11 at 17:11 Bruce StephensBruce Stephens 6,06511 gold badge1414 silver badges77 bronze badges ...
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How to use a switch case 'or' in PHP

...swered Oct 16 '08 at 0:26 user19302user19302 add a comment ...