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How to add a custom loglevel to Python's logging facility
...at the log level is set to. So if you make a new level number of 9, if you call setLevel(50), the lower level messages will erroneously be printed.
To prevent that from happening, you need another line inside the "debugv" function to check if the logging level in question is actually enabled.
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Why is volatile not considered useful in multithreaded C or C++ programming?
...er might think it knows what will be in
shared_data, but the spin_lock() call, since it acts as a memory
barrier, will force it to forget anything it knows. There will be no
optimization problems with accesses to that data.
If shared_data were declared volatile, the locking would still b...
How to check if IEnumerable is null or empty?
...op the this there – I consider extension methods which are assumed to be called on null as a sign of ugly design.
– Mormegil
Feb 18 '11 at 22:49
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Is there some way to PUSH data from web server to browser?
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Yes, it's called Reverse Ajax or Comet. Comet is basically an umbrella term for different ways of opening long-lived HTTP requests in order to push data in real-time to a web browser. I'd recommend StreamHub Push Server, they have so...
How to exit an if clause
...sidering using Python. In other words: don't worry so much about function call overhead.
– ephemient
Jan 15 '10 at 5:47
18
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Should I declare Jackson's ObjectMapper as a static field?
...They are fully immutable, thread-safe, meaning that it is not even theoretically possible to cause thread-safety issues (which can occur with ObjectMapper if code tries to re-configure instance).
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How does the NSAutoreleasePool autorelease pool work?
...aned up the next time GC runs, which could very well be directly after the call to -drain:
drain
In a garbage collected environment, triggers garbage collection if memory allocated since last collection is greater than the current threshold; otherwise behaves as release.
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In a garbag...
How to return a value from __init__ in Python?
...... return 42
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>>> foo = Foo()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: __init__() should return None
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How to add extension methods to Enums
...ame ambiguity of Enum<T> is a bit confusing. The class could also be called EnumUtils<T> and the method call would resolve to EnumUtils<Duration>.Count.
– Namoshek
Feb 27 '19 at 8:02
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Best practices/performance: mixing StringBuilder.append with String.concat
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Although newer versions of the compiler automatically optimize the + operator to a string builder it isn't necessarily a good thing to assume it will as older versions don't. There is a very important topic that is being ignored in this whole discussion which is actually ...