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SQL Server Index Naming Conventions [closed]
...s/1401572/… KEY and INDEX are synonyms. So it should be no need to have different prefixes for unique keys and unique indexes?
– skjerdalas
Dec 17 '14 at 10:19
2
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Average of 3 long integers
... can give a result that is off by one, namely rounded up rather than down, if negative values for the variables are allowed. For instance if x,y are positive multiples of 3, and z is -2, you get (x+y)/3 which is too much.
– Marc van Leeuwen
May 30 '14 at 15:15
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What's the best way to trim std::string?
...pp>
std::string str("hello world! ");
boost::trim_right(str);
str is now "hello world!". There's also trim_left and trim, which trims both sides.
If you add _copy suffix to any of above function names e.g. trim_copy, the function will return a trimmed copy of the string instead of modifying...
Python integer division yields float
...142857142857
100//35 => 2
100.//35 => 2.0 # floating-point result if divsor or dividend real
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Can I serve multiple clients using just Flask app.run() as standalone?
...tly pass threaded=True to enable this behaviour.
For example, you can do
if __name__ == '__main__':
app.run(threaded=True)
to handle multiple clients using threads in a way compatible with old Flask versions, or
if __name__ == '__main__':
app.run(threaded=False, processes=3)
to tell W...
Hidden Features of PHP? [closed]
... This is a great feature of PHP, but I wouldn't really call it hidden... If you've ever googled for method parameters, etc, you would end up at php.net.
– John Bubriski♦
Mar 23 '09 at 17:04
...
Do try/catch blocks hurt performance when exceptions are not thrown?
... IL_001f: nop
IL_0020: nop
IL_0021: leave.s IL_002f //JUMP IF NO EXCEPTION
} // end .try
catch [mscorlib]System.Exception
{
IL_0023: stloc.0
IL_0024: nop
IL_0025: ldloc.0
IL_0026: call void [mscorlib]System.Console::WriteLine(object)
IL_002b: no...
When to use volatile with multi threading?
...e semantics on volatile variables.
[Update for C++11]
The C++11 Standard now does acknowledge multithreading directly in the memory model and the lanuage, and it provides library facilities to deal with it in a platform-independant way. However the semantics of volatile still have not changed. v...
What is the meaning of “__attribute__((packed, aligned(4))) ”
...
}__attribute__((packed, aligned(1))) sSampleStruct;
so the above specified gcc attribute does not allow the structure padding. so the size will be 8 bytes.
If you wish to do the same for all the structures, simply we can push the alignment value to stack using #pragma
#pragma pack(push, 1)
...
What is the best practice for “Copy Local” and with project references?
...t;Import Project="[relative path to Common.targets]" />
<!-- To modify your build process, add your task inside one of the targets below and uncomment it.
Other similar extension points exist, see Microsoft.Common.targets.
<Target Name="BeforeBuild">
</Target>
<T...