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An expression tree may not contain a call or invocation that uses optional arguments

Where edit had a second, nullable argument. 2 Answers 2 ...
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iPhone/iOS JSON parsing tutorial [closed]

As a learning experience, I want to make an iPhone application that calls a webserver/webservice, retrieves a JSON response, and uses that response to populate the rows of a UITableView (assuming it converts the JSON into an NSArray first). ...
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jQuery .scrollTop(); + animation

I set the page to scroll to top when a button is clicked. But first I used an if statement to see if the top of the page was not set to 0. Then if it's not 0 I animate the page to scroll to the top. ...
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Android Studio: Android Manifest doesn't exists or has incorrect root tag

I got this error on Android Studio (AS): 11 Answers 11 ...
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Some questions about Automatic Reference Counting in iOS5 SDK

I'm currently developing an app for iPad. The development started for iOS 4.2 and is now continuing (and I think will be completed) for iOS 4.3. I just read about ARC in iOS 5, and basically I understood that we will never need to release and retain objects anymore. My questions are: ...
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How do you connect to multiple MySQL databases on a single webpage?

I have information spread out across a few databases and want to put all the information onto one webpage using PHP. I was wondering how I can connect to multiple databases on a single PHP webpage. ...
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Java serialization: readObject() vs. readResolve()

The book Effective Java and other sources provide a pretty good explanation on how and when to use the readObject() method when working with serializable Java classes. The readResolve() method, on the other hand, remains a bit of a mystery. Basically all documents I found either mention only one o...
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How do I clear stuck/stale Resque workers?

As you can see from the attached image, I've got a couple of workers that seem to be stuck. Those processes shouldn't take longer than a couple of seconds. ...
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What are “signed” cookies in connect/expressjs?

I am trying to figure out what "signed cookies" actually are. There isn't much on the net, and if I try this: 4 Answers ...
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What's the standard way to work with dates and times in Scala? Should I use Java types or there are

What's the standard way to work with dates and times in Scala? Should I use Java types such as java.util.Date or there are native Scala alternatives? ...