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Hibernate Error: org.hibernate.NonUniqueObjectException: a different object with the same identifier
...e with 10 rows based on a primary key combination (column 1 and column 2). Now, you have removed 5 rows from the table at some point of time. Now, if you try to add the same 10 rows again, while hibernate tries to persist the objects in database, 5 rows which were already removed will be added witho...
The term “Context” in programming? [closed]
I have been programming for some months now and a frequently used word is "context" in classes. Like ServletContext (Java), Activity (Android), Service (Java, Android), NSManagedContext (Objective-C, iOS).
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Create a devise user from Ruby console
...e, make sure you are setting the confirmed_at value to something like Time.now while creating.
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Comparison of full text search engine - Lucene, Sphinx, Postgresql, MySQL?
...t Lucene - because I've no idea about that.
Sphinx, on the other hand, I know quite well, so let's see if I can be of some help.
Result relevance ranking is the default. You can set up your own sorting should you wish, and give specific fields higher weightings.
Indexing speed is super-fast, beca...
How does the paste image from clipboard functionality work in Gmail and Google Chrome 12+?
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Now that the first item in the list isn't always the file you pasted, I've updated it to loop through the items to find any pasted files.
– Nick Retallack
Sep 7 '15 at 20:28
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How to concatenate two numbers in javascript?
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You can now make use of ES6 template literals.
const numbersAsString = `${5}${6}`;
console.log(numbersAsString); // Outputs 56
Or, if you have variables:
const someNumber = 5;
const someOtherNumber = 6;
const numbersAsString = `...
Timer function to provide time in nano seconds using C++
...e QueryPerformanceCounter. And here is more on QPC
Apparently there is a known issue with QPC on some chipsets, so you may want to make sure you do not have those chipset. Additionally some dual core AMDs may also cause a problem. See the second post by sebbbi, where he states:
QueryPerformance...
How to sort my paws?
...ellent answer that helped me detect where a paw hit a pressure plate, but now I'm struggling to link these results to their corresponding paws:
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Android emulator-5554 offline
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This helped ind combination with 'Cold Boot now' just below 'Wipe Data'.
– S. Gissel
Apr 24 '19 at 11:00
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What are the differences between virtual memory and physical memory?
..., while maintaining a respectable performance for the softwares running.
Now the main question boils down to how the memory is being managed. What exactly governs where in the memory will the data belonging to a given software reside?
Possible solution 1: Let individual softwares specify expl...