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Format a datetime into a string with milliseconds

I want to have a datetime string from the date with milliseconds. This code is typical for me and I'm eager to learn how to shorten it. ...
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Optimistic vs. Pessimistic locking

I understand the differences between optimistic and pessimistic locking. Now could someone explain to me when I would use either one in general? ...
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SQL is null and = null [duplicate]

What is the difference between 4 Answers 4 ...
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Where is Java's Array indexOf?

I must be missing something very obvious, but I've searched all over and can't find this method. 13 Answers ...
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Most efficient way to cast List to List

I have a List<SubClass> that I want to treat as a List<BaseClass> . It seems like it shouldn't be a problem since casting a SubClass to a BaseClass is a snap, but my compiler complains that the cast is impossible. ...
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What is a predicate in c#? [duplicate]

I am very new to using predicates and just learned how to write: 4 Answers 4 ...
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Python: changing value in a tuple

I'm new to python so this question might be a little basic. I have a tuple called values which contains the following: 17...
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Big-oh vs big-theta [duplicate]

It seems to me like when people talk about algorithm complexity informally, they talk about big-oh. But in formal situations, I often see big-theta with the occasional big-oh thrown in. I know mathematically what the difference is between the two, but in English, in what situation would using big-oh...
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Sublime Text 2: Trim trailing white space on demand

I know that Sublime Text 2 can delete the trailing white space on files upon saving. 5 Answers ...
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Conversion failed when converting date and/or time from character string while inserting datetime

I was trying to create a table as follows, 15 Answers 15 ...