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Why is it not possible to extend annotations in Java?
... enum AnnotationCategory {
GENERAL,
SEMANTICS,
VALIDATION,
ETC
}
@Category(category={AnnotationCategory.GENERAL, AnnotationCategory.SEMANTICS})
public @interface FooBarAnnotation {
}
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Combine multiple Collections into a single logical Collection?
...ods in the Collection interface would either have undefined semantics (add etc) or miserable performance (contains etc).
– Sean Patrick Floyd
Aug 2 '11 at 13:00
2
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How can one print a size_t variable portably using the printf family?
...nu says %zu (or %zx, or %zd but that displays it as though it were signed, etc.)
Microsoft says %Iu (or %Ix, or %Id but again that's signed, etc.) — but as of cl v19 (in Visual Studio 2015), Microsoft supports %zu (see this reply to this comment)
...and of course, if you're using C++, you can u...
How to force file download with PHP
...dd proper content type based on your file application/zip, application/pdf etc. - but only if you do not want to trigger the save-as dialog.
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How to save an activity state using save instance state?
... savedInstanceState.putString("MyString", "Welcome back to Android");
// etc.
}
The Bundle is essentially a way of storing a NVP ("Name-Value Pair") map, and it will get passed in to onCreate() and also onRestoreInstanceState() where you would then extract the values from activity like this:
@O...
What breaking changes are introduced in C++11?
...ng change?
Well, for one thing, if you used decltype, constexpr, nullptr, etc. as identifiers then you may be in trouble...
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Where is Maven' settings.xml located on mac os?
...se you can do like this also..
->Path to Maven can also be found from /etc/bashrc file in mac.
Get Path to Maven from that file and in that Maven directory you can find conf/ directory inside that directory you can find settings.xml of maven
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How to write a scalable Tcp/Ip based server
... break;
}
if (e.Buffer[i] == (int)TelnetCommand.IAC)
{
TelnetCommand command = (TelnetCommand)e.Buffer[i + 1];
TelnetOption option = (TelnetOption)e.Buffer[i + 2];
switch (command)
{
...
How do I expand the output display to see more columns of a pandas DataFrame?
... In order to set no limits, None can be used (instead of 999, etc.).
– Eric O Lebigot
Sep 14 '17 at 19:27
5
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Sorting an array of objects in Ruby by object attribute?
...
Any idea how this compares with sort! (e.g. speed, etc.)?
– Joshua Pinter
Jul 11 '15 at 0:32
E...