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MySQL - why not index every field?
Recently I've learned the wonder of indexes, and performance has improved dramatically. However, with all I've learned, I can't seem to find the answer to this question.
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Difference between final static and static final
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@Annotation public protected private static final transient volatile
And for methods:
@Annotation public protected private abstract static final synchronized native strictfp
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Best practices for large solutions in Visual Studio (2008) [closed]
...0+ projects, most of them C#. Naturally, it takes a long time to both open and build, so I am looking for best practices for such beasts. Along the lines of questions I am hoping to get answers to, are:
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Why modelVersion of pom.xml is necessary and always set to 4.0.0?
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It is always set to 4.0.0 in Maven 2 and 3, because, at present, there is no other model.
Notice that modelVersion contains 4.0.0. That is currently the only supported POM version, and is always required. [source]
But it wouldn't necessarily need to always...
How to find path of active app.config file?
I'm trying to finish this exception handler:
8 Answers
8
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How to check if any flags of a flag combination are set?
...f you want to know if letter has any of the letters in AB you must use the AND & operator. Something like:
if ((letter & Letters.AB) != 0)
{
// Some flag (A,B or both) is enabled
}
else
{
// None of them are enabled
}
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__init__ for unittest.TestCase
...erriding the TestCase's __init__, so you might want to let the base class handle the arguments for you.
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How do I navigate in the results of Diff
When I do a Git diff, it shows the code with the diff and it looks great. But how do I go to the next page or the next document.
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Why does Convert.ToString(null) return a different value if you cast null?
...e to any reference type. In this case string is more specific than object and hence it will be picked as the winner.
In the null as object you've solidified the type of the expression as object. This means it's no longer compatible with the string overload and the compiler picks the object over...
Is the order guaranteed for the return of keys and values from a LinkedHashMap object?
...der (insertion order). Does the Set returned by LinkedHashMap.keySet() and the Collection returned by LinkedHashMap.values() also maintain this order?
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