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How does @synchronized lock/unlock in Objective-C?

Does @synchronized not use "lock" and "unlock" to achieve mutual exclusion? How does it do lock/unlock then? 5 Answers ...
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SQL Logic Operator Precedence: And and Or

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Difference between an application server and a servlet container?

I am trying to understand the difference between a full fledged application server (e.g. Weblogic, JBoss etc.) and a servlet container (Tomcat, Jetty etc.). ...
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Are there any downsides to enabling git rerere?

I've read various things about git's rerere feature, and I'm considering enabling it. But I haven't seen anyone mention any possible problems that could arise while using it. I have to assume there is a downside, or it would probably be enabled by default. So is there any downside to enabling rerere...
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Replace specific characters within strings

I would like to remove specific characters from strings within a vector, similar to the Find and Replace feature in Excel. ...
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Match linebreaks - \n or \r\n?

While writing this answer , I had to match exclusively on linebreaks instead of using the s -flag ( dotall - dot matches linebreaks). ...
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Input and output numpy arrays to h5py

I have a Python code whose output is a sized matrix, whose entries are all of the type float . If I save it with the extension .dat the file size is of the order of 500 MB. I read that using h5py reduces the file size considerably. So, let's say I have the 2D numpy array named A . How do I ...
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Where's the difference between setObject:forKey: and setValue:forKey: in NSMutableDictionary?

When looking at the documentation, I hardly see any big difference. Both "value" and "object" are of type id , so can be any object. Key is once a string, and in the other case an id. One of them seems to retain the object, and the other don't. What else? Which one is for what case? ...
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Superiority of unnamed namespace over static?

How are unnamed namespaces superior to the static keyword? 2 Answers 2 ...
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Handling a Menu Item Click Event - Android

...t to create an intent that starts a new activity once a Menu Item is clicked, but I'm not sure how to do this. I've been reading through the android documentation, but my implementation isn't correct..and some guidance in the right direction would help. I've listed my code below and commented out my...