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What is string_view?
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The purpose of any and all kinds of "string reference" and "array reference" proposals is to avoid copying data which is already owned somewhere else and of which only a non-mutating view is required. The string_view in question is one such pro...
How to version control a record in a database
Let's say that I have a record in the database and that both admin and normal users can do updates.
11 Answers
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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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__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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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 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...
How to find path of active app.config file?
I'm trying to finish this exception handler:
8 Answers
8
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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 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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