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Why should hash functions use a prime number modulus?
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Usually a simple hash function works by taking the "component parts" of the input (characters in the case of a string), and multiplying them by the powers of some constant, and adding them together in some integer type. So for e...
Knight's Shortest Path on Chessboard
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You have a graph here, where all available moves are connected (value=1), and unavailable moves are disconnected (value=0), the sparse matrix would be like:
(a1,b3)=1,
(a1,c2)=1,
.....
And the shortest path of two points in a graph can be found usin...
Can I “multiply” a string (in C#)?
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I don't think it's elegant at all. In python the code to do this is: snip * multiplier (It's not horrible.. but neither is it beautiful).
– demented hedgehog
Jun 2 '15 at 2:56
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Ignoring an already checked-in directory's contents?
...d only to hold graphics and sound files used in several projects. They are all in one directory without sub-directories. Now I just created a script to copy these assets over from another, structured directory, with several levels of sub-directories.
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What are the drawbacks of Stackless Python? [closed]
...and it seems to have many advantages compared with vanilla cPython. It has all those cool features like infinite recursion, microthreads, continuations, etc. and at the same time is faster than cPython (around 10%, if the Python wiki is to be believed) and compatible with it (at least versions 2...
How to construct a REST API that takes an array of id's for the resources
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If you are passing all your parameters on the URL, then probably comma separated values would be the best choice. Then you would have an URL template like the following:
api.com/users?id=id1,id2,id3,id4,id5
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How to create an infinite loop in Windows batch file?
...it
rem ** can be stopped with a syntax error
call :stop
)
:stop
call :__stop 2>nul
:__stop
() creates a syntax error, quits the batch
This could be useful if you need a really infinite loop, as it is much faster than a goto :loop version because a for-loop is cached completely once at sta...
Connect to a locally built Jekyll Server using mobile devices in the LAN
...e Jekyll on the command line.
That will make Jekyll's HTTP server bind to all available IPs, rather than just to localhost.
You can also add this to your _config.yml with host: 0.0.0.0. GitHub will simply ignore this when you push, so it's safe to use if you don't mind having your work openly acce...
Is git not case sensitive?
In the first commitment of my partial called _Electronics it was written beginning with a capital letters, then I changed it to _electronics .
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How is pattern matching in Scala implemented at the bytecode level?
...atterns like or patterns and combinations like "case Foo(45, x)", but generally those are just logical extensions of what I just described. Patterns can also have guards, which are additional constraints on the predicates. There are also cases where the compiler can optimize pattern matching, e.g...