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What are bitwise shift (bit-shift) operators and how do they work?
... powerful: one operand of any instruction can be left or right shifted for free. So scaling by a compile-time-constant that's known to be a power-of-2 can be even more efficient than a multiply.
OK, back in the modern days... something more useful now would be to use bitshifting to store two 8-b...
Placing border inside of div and not on its edge
...or example: No IE 8 support.
See caniuse.com (box-shadow feature) for more info.
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AngularJS: how to implement a simple file upload with multipart form?
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Note that this won't work if you have debugInfo disabled (as recommended)
– Bruno Peres
Sep 8 '15 at 3:29
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How do I ignore files in a directory in Git?
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Thanks for the info @petrsyn
– Novocaine
Mar 9 '16 at 9:42
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Which regular expression operator means 'Don't' match this character?
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@Click: It's pretty standard. regular-expressions.info/refadv.html, also most regexp engine manuals say the same thing.
– Amadan
May 8 '11 at 5:25
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Octave-Gnuplot-AquaTerm error: set terminal aqua enhanced title “Figure 1”…unknown terminal type"
...at:
brew install gnuplot --with-x
This solved the issue for me.
Use brew info gnuplot to see the list of flags for gnuplot installation.
P.S.
And yes, I did download an X11 dmg and installed it using package installer, still gnuplot had no x11 in the list of supported terminals.
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java.sql.SQLException: - ORA-01000: maximum open cursors exceeded
...et nor the connection object.
But still we have to close the resultset to free some oracle memory. Still if you don't close the resultset that won't be counted for CURSORS.
Closing Statement object will automatically close resultset object too.
Cursor will be created for all the SELECT/INSERT/UPD...
method overloading vs optional parameter in C# 4.0 [duplicate]
...issues. Changing the default value leads to issues (See e.g. here for some info: Caveats of C# 4.0 optional parameters)
Also, optional params can only be used for compile-time constants. Compare this:
public static void Foo(IEnumerable<string> items = new List<string>()) {}
// Default ...
how to bypass Access-Control-Allow-Origin?
...calls (or open iframes) to facebook. This means you can grab the logged in info of the facebook of a visitor of your website. Even worse - you can script POST requests and post data on someone's facebook - just while they are browsing your website.
Be very cautious when using the ACAO headers!
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What are the best practices for catching and re-throwing exceptions?
...omething to the caught exception, may it be some context, values, logging, freeing resources, whatever.
A way to add some information is to extend the Exception class, to have exceptions like NullParameterException, DatabaseException, etc. More over, this allow the developper to only catch some exc...