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How to get the process ID to kill a nohup process?
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When using nohup and you put the task in the background, the background operator (&) will give you the PID at the command prompt. If your plan is to manually manage the process, you can save that PID and use it later to kill the process i...
How can I read command line parameters from an R script?
I've got a R script for which I'd like to be able to supply several command-line parameters (rather than hardcode parameter values in the code itself). The script runs on Windows.
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What is eager loading?
...on't do any calculations until you access an element of the result matrix; and
Over-eager loading: this is where you try and anticipate what the user will ask for and preload it.
I hope that makes sense in the context you're seeing it.
Let me give you a "Webby" example.
Imagine a page with rollo...
Twitter bootstrap 3 two columns full height
...ull-height columns (due to the custom css-table properties which we added) and with ratio 1:3 (Navigation:Content) for medium screen widths and above - (due to bootstrap's default classes: col-md-3 and col-md-9)
NB:
1) In order not to mess up bootstrap's native column classes we add another clas...
What is an NP-complete in computer science?
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NP stands for Non-deterministic Polynomial time.
This means that the problem can be solved in Polynomial time using a Non-deterministic Turing machine (like a regular Turing machine but also including a non-deterministic "choice"...
Why is printing to stdout so slow? Can it be sped up?
...ement. After some recent painfully slow logging I decided to look into it and was quite surprised to find that almost all the time spent is waiting for the terminal to process the results.
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Should import statements always be at the top of a module?
...an prevent circular dependencies.
For example, if you have 2 modules, X.py and Y.py, and they both need to import each other, this will cause a circular dependency when you import one of the modules causing an infinite loop. If you move the import statement in one of the modules then it won't try to...
How far can memory leaks go?
...erating system maintains: memory, open files, network connections, window handles...
That said, if the program is running on an embedded system without an operating system, or with a very simple or buggy operating system, the memory might be unusable until a reboot. But if you were in that situatio...
How to create a generic array in Java?
...i.e. its constructor was explicitly called with a Class<E> argument, and methods will throw an exception when they are passed arguments that are not of type E. See Collections.checkedCollection.
-> in that case, you should write:
public class GenSet<E> {
private E[] a;
pub...
How do I get PHP errors to display?
I have checked my PHP ini file ( php.ini ) and display_errors is set and also error reporting is E_ALL . I have restarted my Apache webserver.
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