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What is the difference between String and string in C#?
... 32x. One of the kernel APIs required a long, and I kept getting overflow errors by using a .NET long for the struct I was passing in; it had to be a .NET int /Int32 to translate to the kernel's definition of a long. So there's still room for confusion! msdn.microsoft.com/en-us/library/windows/de...
Android: How can I get the current foreground activity (from a service)?
...ivity are same before assigning activeActivity with null in order to avoid errors due to intermingled calling order of lifecycle methods of various activities.
– Rahul Tiwari
What is reflection and why is it useful?
... @FernandoGabrieli while it is true that it is easy to create runtime errors with reflection, it is also perfectly possible to use reflection without risking runtime exceptions. As hinted in my answer, a common use of reflection is for libraries or frameworks, which explicitly can't know the st...
How can I clear the SQL Server query cache?
... the regular completion message
"DBCC execution completed. If DBCC printed error messages, contact your system administrator."
DBCC FREEPROCCACHE WITH NO_INFOMSGS;
3. Flush the ad hoc and prepared plan cache for the entire instance
DBCC FREESYSTEMCACHE ('SQL Plans');
4. Flush the ad hoc and prepar...
How do I convert between big-endian and little-endian values in C++?
...ined(BOOST_BIG_ENDIAN)
host_endian = big_endian
#else
#error "unable to determine system endianness"
#endif
};
namespace detail {
template<typename T, size_t sz>
struct swap_bytes
{
inline T operator()(T val)
{
throw std::out_of_range("data size");
...
Java, Classpath, Classloading => Multiple Versions of the same jar/project
... linking process of a depending class.
You are likely to encounter LinkageErrors stating that duplicate class definitions have been encountered for classloaders typically do not attempt to determine which class should be loaded first (if there are two or more classes of the same name present in the...
AngularJS : How to watch service variables?
...o){
$scope.foo = foo;
})
First two arguments of then are success and error callbacks, third one is notify callback.
Reference for $q.
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Scrolling a flexbox with overflowing content
...
I just solved this problem very elegantly after a lot of trial and error.
Check out my blog post: http://geon.github.io/programming/2016/02/24/flexbox-full-page-web-app-layout
Basically, to make a flexbox cell scrollable, you have to make all its parents overflow: hidden;, or it will just ...
What's the difference between std::move and std::forward
...llowed.
If you attempt to specify Y to something that is not allowed, the error will be caught at compile time, not run time.
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Select by partial string from a pandas DataFrame
...ed solution above:
df[df["A"].str.contains("Hello|Britain")]
and got an error:
ValueError: cannot mask with array containing NA / NaN values
you can transform NA values into False, like this:
df[df["A"].str.contains("Hello|Britain", na=False)]
...