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Is there a way to access the “previous row” value in a SELECT statement?
I need to calculate the difference of a column between two lines of a table. Is there any way I can do this directly in SQL? I'm using Microsoft SQL Server 2008.
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How to break out from a ruby block?
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Use the keyword next. If you do not want to continue to the next item, use break.
When next is used within a block, it causes the block to exit immediately, returning control to the iterator method, which may then begin a new iteration by invoking the block again:
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.NET: Which Exception to Throw When a Required Configuration Setting is Missing?
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You're not limited in your exception-throwing to existing exceptions in the Framework. If you do decide to use existing exceptions, you don't absolutely have to follow the documentation to the letter. The documentation will describe how the framework uses a given excep...
What does the function then() mean in JavaScript?
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The traditional way to deal with asynchronous calls in JavaScript has been with callbacks.
Say we had to make three calls to the server, one after the other, to set up our
application. With callbacks, the code might look something like the follo...
Serializing an object as UTF-8 XML in .NET
...t disposal removed for brevity but I'm shocked if this is the simplest way to encode an object as UTF-8 in memory. There has to be an easier way doesn't there?
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How to read a .xlsx file using the pandas Library in iPython?
I want to read a .xlsx file using the Pandas Library of python and port the data to a postgreSQL table.
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Read logcat programmatically within application
I want to read and react to logcat logs within my application.
6 Answers
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Binding multiple events to a listener (without JQuery)?
While working with browser events, I've started incorporating Safari's touchEvents for mobile devices. I find that addEventListener s are stacking up with conditionals. This project can't use JQuery.
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javax vs java package
What's the rationale behind the javax package? What goes into java and what into javax?
7 Answers
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How to fetch FetchType.LAZY associations with JPA and Hibernate in a Spring Controller
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You will have to make an explicit call on the lazy collection in order to initialize it (common practice is to call .size() for this purpose). In Hibernate there is a dedicated method for this (Hibernate.initialize()), but JPA has no equiv...