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CSS horizontal centering of a fixed div?

I know this question is a million times out there, however I can't find a solution to my case. I've got a div, which should be fixed on the screen, even if the page is scrolled it should always stay CENTERED in the middle of the screen! ...
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How to get duration, as int milli's and float seconds from ?

...; typedef std::chrono::duration<float> fsec; auto t0 = Time::now(); auto t1 = Time::now(); fsec fs = t1 - t0; ms d = std::chrono::duration_cast<ms>(fs); std::cout << fs.count() << "s\n"; std::cout << d.count() << "ms\n"; } which for m...
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ValidateAntiForgeryToken purpose, explanation and example

...names as CrossSite_RequestForgery and Attack_Application respectively. Now, open CrossSite_RequestForgery application's Web Config and change the connection string with the one given below and then save. ` <connectionStrings> <add name="DefaultConnection" connectionString="Data...
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Why is iostream::eof inside a loop condition (i.e. `while (!stream.eof())`) considered wrong?

...am): while(!inStream.eof()){ int data; // yay, not end of stream yet, now read ... inStream >> data; // oh crap, now we read the end and *only* now the eof bit will be set (as well as the fail bit) // do stuff with (now uninitialized) data } Against this: int data; while(inStream...
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Run a callback only if an attribute has changed in Rails

...saving to the database, or within the before_save filter: changes should now be changes_to_save changed? should now be has_changes_to_save? changed should now be changed_attribute_names_to_save <attribute>_change should now be <attribute>_change_to_be_saved <attribute>_changed? s...
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MySQL selecting yesterday's date

... SELECT SUBDATE(NOW(),1); where now() function returs current date and time of system in Timestamp... you can use: SELECT SUBDATE(CURDATE(),1) share | ...
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How can I get the DateTime for the start of the week?

How do I find the start of the week (both Sunday and Monday) knowing just the current time in C#? 32 Answers ...
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How can I compare two dates in PHP?

... Wouldn't it now be "If all your dates are posterior to the 1st of January of 1970" and "previous to 2038"? watch our for the y2k38 bug. strtotime will return false for larger dates. stackoverflow.com/questions/2012589/… ...
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Get time in milliseconds using C#

...0 numbers bigger than it was a second ago. I've tried converting DateTime.Now to a TimeSpan and getting the TotalMilliseconds from that... but I've heard it isn't perfectly accurate. ...
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How to delete cookies on an ASP.NET website

...ies["userId"] != null) { Response.Cookies["userId"].Expires = DateTime.Now.AddDays(-1); } But it also makes sense to use Session.Abandon(); besides in many scenarios. share | improve th...