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Django removing object from ManyToMany relationship
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If you need to remove all M2M references without touching the underlying objects, it's easier to work from the other direction:
interest.mood_set.clear()
While this does not directly address the OP's question, it's often useful in this situatio...
How do I check CPU and Memory Usage in Java?
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If you are looking specifically for memory in JVM:
Runtime runtime = Runtime.getRuntime();
NumberFormat format = NumberFormat.getInstance();
StringBuilder sb = new StringBuilder();
long maxMemory = runtime.maxMemory();
long allocatedMemory = runtime...
What is an anti-pattern?
...mmon approaches to common problems which have been formalized and are generally considered a good development practice, anti-patterns are the opposite and are undesirable.
For example, in object-oriented programming, the idea is to separate the software into small pieces called objects. An anti-pat...
Separate REST JSON API server and client? [closed]
...nts: front-end websites, smartphone apps, backend webservices, etc. So I really want a JSON REST API for each one.
18 Answe...
How many String objects will be created when using a plus sign?
...ther optimizations at runtime. I'm just going by what IL is produced.
Finally, as regards interning, constants and literals are interned, but the value which is interned is the resulting constant value in the IL, not the literal. This means that you might get even fewer string objects than you ex...
Converting String array to java.util.List
...>(Arrays.asList(new String[]{"one", "two", "three"}));
This will copy all elements from the source array into a new list (complexity: O(n))
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What are the effects of exceptions on performance in Java?
Question: Is exception handling in Java actually slow?
18 Answers
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Undo a merge by pull request?
...erge, but I noticed that it merged in a bunch of commits. So now there are all these commits from this person from days before the merge. How do you undo this?
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Is “argv[0] = name-of-executable” an accepted standard or just a common convention?
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Guesswork (even educated guesswork) is fun but you really need to go to the standards documents to be sure. For example, ISO C11 states (my emphasis):
If the value of argc is greater than zero, the string pointed to by argv[0] represents the program name; argv[0][0] shall b...
Why Qt is misusing model/view terminology?
...ng. In my opinion however, the problem is not Qt's alone, but is shared by all frameworks that allow us to adhere to the principle of separation of concerns when implementing our UIs. When someone comes up with such a framework, and finds a good way to keep "things" separated, they always feel oblig...