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JSF backing bean structure (best practices)
...et people's opinions on best practices for the interface between JSF pages and backing beans.
6 Answers
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Identifying the dependency relationship for python packages installed with pip
...cies for packages installed by conda: e.g. in a conda env where matplotlib and numpy were installed using pip, but scipy was installed using conda, scipy shows up in the pipdeptree as having no depencies and no dependents (also pip show scipy shows no requirements).
– djvg
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What really happens in a try { return x; } finally { x = null; } statement?
I saw this tip in another question and was wondering if someone could explain to me how on earth this works?
5 Answers
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Accessing JPEG EXIF rotation data in JavaScript on the client side
... The trick is that all this should happen in the browser, using JavaScript and <canvas> .
8 Answers
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Should I declare Jackson's ObjectMapper as a static field?
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Yes, that is safe and recommended.
The only caveat from the page you referred is that you can't be modifying configuration of the mapper once it is shared; but you are not changing configuration so that is fine. If you did need to change conf...
Synchronization vs Lock
...in order to access the critical resource. It gives method such as park() and unpark() .
11 Answers
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How to specialize std::hash::operator() for user-defined type in unordered containers?
To support user-defined key types in std::unordered_set<Key> and std::unordered_map<Key, Value>
one has to provide operator==(Key, Key) and a hash functor:
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binning data in python with scipy/numpy
... of an array in prespecified bins? for example, i have an array of numbers and an array corresponding to bin start and end positions in that array, and I want to just take the mean in those bins? I have code that does it below but i am wondering how it can be cut down and improved. thanks.
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Are negative array indexes allowed in C?
I was just reading some code and found that the person was using arr[-2] to access the 2nd element before the arr , like so:
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How to add Options Menu to Fragment in Android
...Bundle) to notify the fragment that it should participate in options menu handling.
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