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How do I set cell value to Date and apply default Excel date format?
...ache POI for some time to read existing Excel 2003 files programmatically. Now I have a new requirement to create entire .xls files in-memory (still using Apache POI) and then write them to a file at the end. The only problem standing in my way is the handling of cells with dates.
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C# operator overload for `+=`?
...ist, which are compiled in a special method calls, and CLR itself doesn't know anything about operators. So let's see what exactly stays behind the + and += operators.
See this simple code:
Decimal d = 10M;
d = d + 10M;
Console.WriteLine(d);
Let view the IL-code for this instructions:
IL_0000...
When is TCP option SO_LINGER (0) required?
...erstand the formal meaning of the option. In some legacy code I'm handling now, the option is used. The customer complains about RST as response to FIN from its side on connection close from its side.
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SQL left join vs multiple tables on FROM line?
...iple departments, and each department can have multiple employees.
Ok, so now you want to do the following:
List all the companies, and include all their departments, and all their employees. Note that some companies don't have any departments yet, but make sure you include them as well. Make s...
Calendar Recurring/Repeating Events - Best Storage Method
... between 1 and 5 potentially. repeat_weekday in the day of the week, 1-7.
Now assuming you are looping through the days/weeks to create a month view in your calendar, you could compose a query like this:
SELECT EV . *
FROM `events` AS EV
JOIN `events_meta` EM1 ON EM1.event_id = EV.id
AND EM1.meta_...
Arrays, heap and stack and value types
... │
16 └───────────────────┘
Now if you had three local variables in a function, of types RefType, ValType, and int[], like this:
RefType refType;
ValType valType;
int[] intArray;
then your stack might look like this:
0 ┌───────...
Android encryption / decryption using AES [closed]
...y,encryptedData);
This should work, I use similar code in a project right now.
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Determine if string is in list in JavaScript
...}
// Result:
0
1
2
blah // Extra member iterated over!
Your code may work now, but the moment someone in the future adds a third-party JavaScript library or plugin that isn't zealously guarding against inherited keys, everything can break.
The old way to avoid that breakage is, during enumeration, ...
When do we have to use copy constructors?
I know that C++ compiler creates a copy constructor for a class. In which case do we have to write a user-defined copy constructor? Can you give some examples?
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Wrap a delegate in an IEqualityComparer
...f your ignore problems with defining a correct hashcode), but I'd like to know if there is an out-of-the-box solution.
13 A...