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Enumerable.Empty() equivalent for IQueryable
When a method returns IEnumerable<T> and I do not have anything to return, we can use Enumerable.Empty<T>() .
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Can bash show a function's definition?
...ion
foobar {
echo "I'm foobar"
}
This does find out what foobar was, and if it was defined as a function it calls declare -f as explained by pmohandras.
To print out just the body of the function (i.e. the code) use sed:
type foobar | sed '1,3d;$d'
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What does '--set-upstream' do?
...efault remote branch for the current local branch.
Any future git pull command (with the current local branch checked-out),
will attempt to bring in commits from the <remote-branch> into the current local branch.
One way to avoid having to explicitly type --set-upstream is to use its shortha...
Incompatible implicit declaration of built-in function ‘malloc’
...y the reason for the warning. Ex: a x64 platform with 64-bit data pointers and 32-bit int values will puke goat feces, while a x86 32bit-data-pointer/32bit-int can seemingly work correctly. Neither are correct, as in neither case is the compiler aware of what malloc actually returns, and assumes int...
What is the mouse down selector in CSS?
I have noticed that buttons and other elements have a default styling and behave in 3 steps: normal view, hover/focus view and mousedown/click view, in CSS I can change the styling of normal view and hover view like this:
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Set default value of an integer column SQLite
I am creating an SQLite database in android.
3 Answers
3
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What is the 
 character?
...s the equivalent to \n -> LF (Line Feed).
Sometimes it is used in HTML and JavaScript. Otherwise in .NET environments, use Environment.NewLine.
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Including jars in classpath on commandline (javac or apt)
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Note for Windows users, the jars should be separated by ; and not :.
for example:
javac -cp external_libs\lib1.jar;other\lib2.jar;
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Where did the name `atoi` come from?
... man pages indicating that atoi means Ascii to Integer (I suspect there is and I just haven't been able to locate it), it's been Ascii to Integer by convention at least since 1971.
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Returning redirect as response to XHR request
... original request led directly to a 200.
This has been both my experience and the behavior called out in the spec.
2016 Update: Time has passed, and the good news is that the new fetch() API is spec'd to offer finer-grained control of how redirects are handled, with default behavior similar to XHR...