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Difference between “on-heap” and “off-heap”

Ehcache talks about on-heap and off-heap memory. What is the difference? What JVM args are used to configure them? 6 Answ...
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Is the C# static constructor thread safe?

.... https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/classes-and-structs/static-constructors The implementation shown is thread safe for the initial construction, that is, no locking or null testing is required for constructing the Singleton object. However, this does not mean that an...
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How to change Hash values?

...my_hash[k] = v.upcase } or, if you'd prefer to do it non-destructively, and return a new hash instead of modifying my_hash: a_new_hash = my_hash.inject({}) { |h, (k, v)| h[k] = v.upcase; h } This last version has the added benefit that you could transform the keys too. ...
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How can I get the console logs from the iOS Simulator?

...ut, so you can see the logs mixed up with system logs. Open the Terminal and type: tail -f /var/log/system.log Then run the simulator. EDIT: This stopped working on Mavericks/Xcode 5. Now you can access the simulator logs in its own folder: ~/Library/Logs/iOS Simulator/<sim-version>/syste...
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UnicodeDecodeError: 'ascii' codec can't decode byte 0xd1 in position 2: ordinal not in range(128)

I am attempting to work with a very large dataset that has some non-standard characters in it. I need to use unicode, as per the job specs, but I am baffled. (And quite possibly doing it all wrong.) ...
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The relationship could not be changed because one or more of the foreign-key properties is non-nulla

I am getting this error when I GetById() on an entity and then set the collection of child entities to my new list which comes from the MVC view. ...
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Chrome hangs after certain amount of data transfered - waiting for available socket

I've got a browser game and I have recently started adding audio to the game. 6 Answers ...
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How do you remove an array element in a foreach loop?

... callback instead of the value ARRAY_FILTER_USE_BOTH - pass both value and key as arguments to callback instead of the value Default is 0 which will pass value as the only argument to callback instead. That said, reading the answer again in this case of course it would not matter as you claim....
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Get person's age in Ruby

... Use this, not the check-marked one which can't handle leap years – bgcode Jan 9 '13 at 21:08 ...
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Regex Named Groups in Java

It is my understanding that the java.regex package does not have support for named groups ( http://www.regular-expressions.info/named.html ) so can anyone point me towards a third-party library that does? ...