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How to add column if not exists on PostgreSQL?

Question is simple. How to add column x to table y , but only when x column doesn't exist ? I found only solution here how to check if column exists. ...
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Show hidden div on ng-click within ng-repeat

...gt; </div> </li> </ul> Here's the fiddle: http://jsfiddle.net/asmKj/ You can also use ng-class to toggle a class: <div class="procedure-details" ng-class="{ 'hidden': ! showDetails }"> I like this more, since it allows you to do some nice transitions: htt...
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CSS3's border-radius property and border-collapse:collapse don't mix. How can I use border-radius to

Edit - Original Title: Is there an alternative way to achieve border-collapse:collapse in CSS (in order to have a collapsed, rounded corner table)? ...
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Jquery - How to make $.post() use contentType=application/json?

...a: data, success: callback }); }; And to use it $.postJSON('http://url', {data: 'goes', here: 'yey'}, function (data, status, xhr) { alert('Nailed it!') }); This was done by simply copying the code of "get" and "post" from the original JQuery sources and hardcoding a few paramet...
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Returning http status code from Web Api controller

...o asked the ASP.NET team here. So the trick is to change the signature to HttpResponseMessage and use Request.CreateResponse. [ResponseType(typeof(User))] public HttpResponseMessage GetUser(HttpRequestMessage request, int userId, DateTime lastModifiedAtClient) { var user = new DataEntities().U...
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Is asynchronous jdbc call possible?

...oks like MySql probably does something along the lines I'm suggesting --- http://code.google.com/p/async-mysql-connector/wiki/UsageExample share | improve this answer | foll...
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Programmatically creating Markdown tables in R with KnitR

... FYI knitr now requires the command in the format results = 'asis' – Stedy Aug 29 '14 at 16:56  |  ...
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Can Objective-C switch on NSString?

Is there a more intelligent way to rewrite this? 13 Answers 13 ...
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Scalar vs. primitive data type - are they the same thing?

...alars include both primitive values as well as things like an enum value. http://ee.hawaii.edu/~tep/EE160/Book/chap5/section2.1.3.html Perhaps the 'scalar' term may be a throwback to C: where scalars are primitive objects which contain a single value and are not composed of other C++ objects ...
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How to append text to an existing file in Java?

I need to append text repeatedly to an existing file in Java. How do I do that? 31 Answers ...