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Calculate difference between two datetimes in MySQL

...ct lastLoginTime from requests where id = '2' ').. Its returning NULL. Any idea why?? – Devesh Agrawal Jun 6 '12 at 3:49 ...
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Is there a version of JavaScript's String.indexOf() that allows for regular expressions?

...ndardized by ECMAScript and is therefore deprecated." But I like the basic idea behind what you are getting at. – Jason Bunting Nov 7 '08 at 23:50 1 ...
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It is more efficient to use if-return-return or if-else-return?

...ionally have some merit. I hope most didn't buy into the single exit-point idea. – Daniel Fischer Feb 8 '12 at 13:33 3 ...
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Java Constructor Inheritance

...t, every class would end up with a parameterless constructor. That's a bad idea. What exactly would you expect: FileInputStream stream = new FileInputStream(); to do? Now potentially there should be a way of easily creating the "pass-through" constructors which are fairly common, but I don't thi...
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Android ListView not refreshing after notifyDataSetChanged

...adapter and then call the appropriate method. I think its not a very good idea to create a new instance of the adapter while setting the list view. Instead, create an object. BuildingAdapter adapter = new BuildingAdapter(context); if(getListView().getAdapter() == null){ //Adapter not set yet....
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Popstate on page's load in Chrome

... @ChadvonNau excellent idea, and it works a treat - thanks very much! – sowasred2012 Mar 7 '13 at 12:55 ...
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Why Java needs Serializable interface?

...anguage created in 70s) every object is serializable by default. I have no idea why this is not the case in Java, considering the fact that the vast majority of objects are safe to serialize and just a few of them aren't. Marking an object as serializable (with an interface) doesn't magically make...
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Send POST request using NSURLSession

... It worked perfecty! Thank you @greentor! Any idea how can I upload a image along with the "plain" data? – Sendoa Sep 30 '13 at 19:33 2 ...
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How do I merge changes to a single file, rather than merging commits?

...ght, it depends what are you doing and what are you trying to achieve. The idea here is branch B is fork of A, you modify 4 files in B, but want to merge only 2 from B to A. Regular merge would merge all 4, here you can select. This may look as they were overridden because B contains essentially new...
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When should I use Debug.Assert()?

...S degree. I've known about assertions for a while in C++ and C, but had no idea they existed in C# and .NET at all until recently. ...