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What are sessions? How do they work?

...lication development, using python. I am coming across the terms 'cookies' and 'sessions'. I understand cookies in that they store some info in a key value pair on the browser. But I have a little confusion regarding sessions, in a session too we store data in a cookie on the user's browser. ...
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What is the purpose of Serialization in Java?

I have read quite a number of articles on Serialization and how it is so nice and great but none of the arguments were convincing enough. I am wondering if someone can really tell me what is it that we can really achieve by serializing a class? ...
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Bamboo Vs. Hudson(a.k.a. Jenkins) vs Any other CI systems [closed]

Anyone out there have experience with both Hudson and Bamboo? Any thoughts on the relative strengths and weaknesses of these products? ...
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LINQ-to-SQL vs stored procedures? [closed]

... Some advantages of LINQ over sprocs: Type safety: I think we all understand this. Abstraction: This is especially true with LINQ-to-Entities. This abstraction also allows the framework to add additional improvements that you can easily take advantage of. PLINQ is an example of adding multi-thre...
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Why would you ever implement finalize()?

...ve been reading through a lot of the rookie Java questions on finalize() and find it kind of bewildering that no one has really made it plain that finalize() is an unreliable way to clean up resources. I saw someone comment that they use it to clean up Connections, which is really scary since the...
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How can I use Homebrew to install both Python 2 and 3 on Mac?

I need to be able to switch back and forth between Python 2 and 3. How do I do that using Homebrew as I don't want to mess with path and get into trouble. Right now I have 2.7 installed through Homebrew. ...
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Confused about stdin, stdout and stderr?

I am rather confused with the purpose of these three files. If my understanding is correct, stdin is the file in which a program writes into its requests to run a task in the process, stdout is the file into which the kernel writes its output and the process requesting it accesses the informatio...
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Is it possible to target older iOS versions when using Xcode 4.2 and iOS 5 SDK?

I just recently downloaded the Xcode 4.2 with iOS 5 SDK package and I immediately noticed that I am unable to use my iPhone 3Gs with iOS 4.2.1 for debugging. I am only able to debug and test on my iphone 4 with iOS 5 installed. ...
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Why use bzero over memset?

...ucts, like sock_addr_in , or char buffers (that we used to send data back and forth between client and server) the professor instructed us to only use bzero and not memset to initialize them. He never explained why, and I'm curious if there is a valid reason for this? ...
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What are the differences between poll and select?

I am referring to the POSIX standard select and poll system C API calls. 3 Answers ...