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Why is transposing a matrix of 512x512 much slower than transposing a matrix of 513x513?
After conducting some experiments on square matrices of different sizes, a pattern came up. Invariably, transposing a matrix of size 2^n is slower than transposing one of size 2^n+1 . For small values of n , the difference is not major.
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What is a “static” function in C?
The question was about plain c functions, not c++ static methods, as clarified in comments.
12 Answers
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Library? Static? Dynamic? Or Framework? Project inside another project
...ct just for ease of testing. The new chunk basically deals with saving an image to various sharing services, etc.. Because that sharing code needs a lot of testing and future updating, I was wondering what the best way to incorporate that code chunk into my existing app.
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How to design a product table for many kinds of product where each product has many parameters
I do not have much experience in table design. My goal is to create one or more product tables that meet the requirements below:
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Add spaces before Capital Letters
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The regexes will work fine (I even voted up Martin Browns answer), but they are expensive (and personally I find any pattern longer than a couple of characters prohibitively obtuse)
This function
string AddSpacesToSentence(string text, bool preserveAcronyms)
{
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Find the IP address of the client in an SSH session
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Check if there is an environment variable called:
$SSH_CLIENT
OR
$SSH_CONNECTION
(or any other environment variables) which gets set when the user logs in. Then process it using the user login script.
Extract the IP:
$ echo $SSH_CLIENT | awk '{...
What does extern inline do?
I understand that inline by itself is a suggestion to the compiler, and at its discretion it may or may not inline the function, and it will also produce linkable object code.
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Can someone explain the traverse function in Haskell?
I am trying and failing to grok the traverse function from Data.Traversable . I am unable to see its point. Since I come from an imperative background, can someone please explain it to me in terms of an imperative loop? Pseudo-code would be much appreciated. Thanks.
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How does this JavaScript/jQuery syntax work: (function( window, undefined ) { })(window)?
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The undefined is a normal variable and can be changed simply with undefined = "new value";. So jQuery creates a local "undefined" variable that is REALLY undefined.
The window variable is made local for performance reasons. Because when JavaScrip...
How do I get the current time only in JavaScript
How can I get the current time in JavaScript and use it in a timepicker?
18 Answers
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