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MySQL Query GROUP BY day / month / year

...n one line. – nights Nov 1 '18 at 3:01 add a comment  |  ...
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Generate array of all letters and digits

... for letters or numbers you can form ranges and iterate over them. try this to get a general idea: ("a".."z").each { |letter| p letter } to get an array out of it, just try the following: ("a".."z").to_a ...
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Xml configuration versus Annotation based configuration [closed]

...d as transactional with an annotation makes perfect sense, since this is information a programmer would probably wish to know. But that an interface is going to be injected as a SubtypeY instead of a SubtypeX should not be included in the class, because if now you wish to inject SubtypeX, you have ...
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ASP.NET MVC - Attaching an entity of type 'MODELNAME' failed because another entity of the same type

... slightly neater and more performant: if (db.As.AsNoTracking().Any(x => x.aID == aID && x.UserID==userID)) – Brent Jul 8 '14 at 10:40 ...
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Multiple Inheritance in C#

... It does have it's caveats, it isn't CLS compliant for example. For more information see this (2004) article blogs.msdn.com/b/csharpfaq/archive/2004/03/07/… – dvdvorle Mar 1 '12 at 8:45 ...
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What is the difference between char * const and const char *?

...stant char (so nothing about it can be changed). Note: The following two forms are equivalent: const char * and char const * The exact reason for this is described in the C++ standard, but it's important to note and avoid the confusion. I know several coding standards that prefer: char cons...
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How can I round a number in JavaScript? .toFixed() returns a string?

... example, 0.1 is really 0.1000000000000000055511151231257827021181583404541015625, and 0.01 is really 0.01000000000000000020816681711721685132943093776702880859375. (Thanks to BigDecimal for proving my point. :-P) Therefore (absent a decimal floating point or rational number type), outputting it as...
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Dump a mysql database to a plaintext (CSV) backup from the command line

I'd like to avoid mysqldump since that outputs in a form that is only convenient for mysql to read. CSV seems more universal (one file per table is fine). But if there are advantages to mysqldump, I'm all ears. Also, I'd like something I can run from the command line (linux). If that's a mysql s...
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String concatenation in MySQL

...xchange.using('gps', function() { StackExchange.gps.track('embedded_signup_form.view', { location: 'question_page' }); }); $window.unbind('scroll', onScroll); } }; ...
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Center image horizontally within a div

...* moves left side of image/element to center of parent element */ transform: translate(-50%); /* centers image/element on "left: 50%" position */ } You can then apply the CSS class you created to your tag as follows: HTML <img class="center" src="image.jpg" /> You can also inline th...