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How do I check CPU and Memory Usage in Java?
I need to check CPU and memory usage for the server in java, anyone know how it could be done?
15 Answers
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How can building a heap be O(n) time complexity?
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Often, answers to these questions focus on the difference between siftUp and siftDown. Making the correct choice between siftUp and siftDown is critical to get O(n) performance for buildHeap, but does nothing to help one understand the difference between buildHeap and heapSort in general. Indeed, ...
Assignment inside lambda expression in Python
I have a list of objects and I want to remove all objects that are empty except for one, using filter and a lambda expression.
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'^M' character at end of lines
...acter at the end of each line of the SQL script as it is echoed to the command-line. I don't know on which OS the SQL script was originally created.
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What is the “FS”/“GS” register intended for?
So I know what the following registers and their uses are supposed to be:
5 Answers
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Pelican 3.3 pelican-quickstart error “ValueError: unknown locale: UTF-8”
...ile:
export LC_ALL=en_US.UTF-8
export LANG=en_US.UTF-8
There is an outstanding bug report related to this issue. It appears that Python makes some assumptions about the format of locale names that aren't universally valid. Explicitly setting these environment vars is basically just a workaround...
When to use a linked list over an array/array list?
I use a lot of lists and arrays but I have yet to come across a scenario in which the array list couldn't be used just as easily as, if not easier than, the linked list. I was hoping someone could give me some examples of when the linked list is notably better.
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How to repeat last command in python interpreter shell?
How do I repeat the last command? The usual keys: Up, Ctrl+Up, Alt-p don't work. They produce nonsensical characters.
26 An...
When to use LinkedList over ArrayList in Java?
...nkedList. If you're not sure — just start with ArrayList.
LinkedList and ArrayList are two different implementations of the List interface. LinkedList implements it with a doubly-linked list. ArrayList implements it with a dynamically re-sizing array.
As with standard linked list and array op...
Understanding Apache's access log
... URL of the page from which this request was initiated) if any is present, and "-" otherwise.
User-agent is the browser identification string.
The complete(?) list of formatters can be found here. The same section of the documentation also lists other common log formats; readers whose logs don't l...