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Why is there huge performance hit in 2048x2048 versus 2047x2047 array multiplication?
...other pairs (2^n-1,2^n) I expect you'll see similar effects.
To explain more fully, in the inner loop, where you access matice2[m,k], it's likely that matice2[m,k] and matice2[m+1,k] are offset from each other by 2048*sizeof(float) and thus map to the same index in the L1 cache. With an N-way as...
How to tell if browser/tab is active [duplicate]
... This answer is not optimal because focus and blur events can often fire more than one time in the browser for each conceptual Focus or Blur action taken by the user, in which case the client will start doing hard_work on more than one interval, basically simultaneously.
– Jo...
How to grep for two words existing on the same line? [duplicate]
...s are pretty much the last place you want to go for clarification. They're more confusing than randomly guessing.
– corsiKa
Jun 25 '11 at 21:45
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Homebrew install specific version of formula?
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TLDR: brew install postgresql@8.4.4 See answer below for more details.
*(I’ve re-edited my answer to give a more thorough workflow for installing/using older software versions with homebrew. Feel free to add a note if you found the old version better.)
Let’s start with the ...
What's the best way to convert a number to a string in JavaScript? [closed]
... @MaryamSaeidi: Using drublic's jsperf.com test above seems more consistent.
– Giraldi
Apr 21 '18 at 9:38
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Is recursion a feature in and of itself?
...ure they've fully explained the thought behind them.
Stack Overflows
The more obvious one is that you risk getting a stack overflow error. Realistically, the method you wrote is very unlikely to actually lead to one, since a user would have to give incorrect input many many times to actually trigg...
How can I check if an argument is defined when starting/calling a batch file?
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A more-advanced example:
⍟ unlimited arguments.
⍟ exist on file system (either file or directory?) or a generic string.
⍟ specify if is a file
⍟ specify is a directory
⍟ no extensions, would work in legacy scripts!
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Is there a way to run Bash scripts on Windows? [closed]
...nother option is MinGW's MSYS which includes bash and a smaller set of the more important utilities such as awk. Personally I would have preferred Cygwin because it includes such heavy lifting tools as Perl and Python which I find I cannot live without, while MSYS skimps on these and assumes you are...
Custom attributes - Yea or nay?
Recently I have been reading more and more about people using custom attributes in their HTML tags, mainly for the purpose of embedding some extra bits of data for use in javascript code.
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What is the difference between XMLHttpRequest, jQuery.ajax, jQuery.post, jQuery.get
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XMLHttpRequest is the raw browser object that jQuery wraps into a more usable and simplified form and cross browser consistent functionality.
jQuery.ajax is a general Ajax requester in jQuery that can do any type and content requests.
jQuery.get and jQuery.post on the other hand can only is...