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Parsing command-line arguments in C?
...
}
// Now optind (declared extern int by <unistd.h>) is the index of the first non-option argument.
// If it is >= argc, there were no non-option arguments.
// ...
}
Example for using Argp
#include <argp.h>
#include <stdbool.h>
const char *argp_program_vers...
What are the advantages of NumPy over regular Python lists?
...h cells are above a threshold:
(x > 0.5).nonzero()
Remove every even-indexed slice along the third dimension:
x[:, :, ::2]
Also, many useful libraries work with NumPy arrays. For example, statistical analysis and visualization libraries.
Even if you don't have performance problems, learni...
RESTfully design /login or /register resources?
...r (I'm not sure which one is correct). I've usually used /users for a user index page (as expected), and /sessions to see who is logged in (as expected).
Using the name in the URL instead of a number (/users/43 vs. /users/joe) is usually driven by the desire to be more friendly to the users or sea...
How do I add a submodule to a sub-directory?
... For me this was causing 'subprojects' already exists in the index (I was using subprojects as the directory name). Instead what helped, is the VonC's answer below, i.e. doing cd subprojects, and then git submodule add <get@github …> without the path.
– Hi...
Setting environment variables on OS X
...nment.plist
See:
https://developer.apple.com/legacy/library/qa/qa1067/_index.html
https://developer.apple.com/library/content/documentation/MacOSX/Conceptual/BPRuntimeConfig/Articles/EnvironmentVars.html
For PATH in the Terminal, you should be able to set in .bash_profile or .profile (you'll p...
How does the Amazon Recommendation feature work?
... together -- to determine similarity, you can use metrics like the Jaccard index; correlation is another possibility, though I suspect Amazon doesn't use ratings data very heavily). Then, whenever I view an item X or make a purchase Y, Amazon suggests me things in the same neighborhood as X or Y.
...
Position of least significant bit that is set
...531U)) >> 27];
Helpful references:
"Using de Bruijn Sequences to Index a 1 in a Computer Word" - Explanation about why the above code works.
"Board Representation > Bitboards > BitScan" - Detailed analysis of this problem, with a particular focus on chess programming
...
HTML table with 100% width, with vertical scroll inside tbody [duplicate]
... browsers, you can simply use css:
th {
position: sticky;
top: 0;
z-index: 2;
}
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How to use sessions in an ASP.NET MVC 4 application?
...hen you request another controller, for example from Account/LogOn to Home/Index, Session["FirstName"] is null. Developers have to create a parent controller (BaseController) and define a protected field (internal protected HttpSessionStateBase SharedSession) that may expose the shared Session vari...
How to iterate over arguments in a Bash script
...gument list like a queue. Each shift throws the first argument out and the
index of each of the remaining arguments is decremented.
#this prints all arguments
while test $# -gt 0
do
echo "$1"
shift
done
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