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Image comparison - fast algorithm
...rmation than others (particularly at edges and corners), and these are the ones you'll want to use for smart image matching. Google "keypoint extraction" and "keypoint matching" and you'll find quite a few academic papers on the subject. These days, SIFT keypoints are arguably the most popular, si...
How to calculate the CPU usage of a process by PID in Linux from C?
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Comparing caf's solution with the one provided by zizzu (below), caf's solution gives system and user times separately but doesn't multiply either of these values with the number of CPUs. Shouldn't it be doing that?
– linuxfan
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How do I check if an object has a specific property in JavaScript?
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The above is a working, cross-browser, solution to hasOwnProperty, with one caveat: It is unable to distinguish between cases where an identical property is on the prototype and on the instance - it just assumes that it's coming from the prototype. You could shift it to be more lenient or strict,...
How to loop through file names returned by find?
... i in $x; do # Not recommended, will break on whitespace
process "$i"
done
Marginally better, cut out the temporary variable x:
for i in $(find -name \*.txt); do # Not recommended, will break on whitespace
process "$i"
done
It is much better to glob when you can. White-space safe, for f...
Elegant Python function to convert CamelCase to snake_case?
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For one instance, sure it's overkill. Across a larger application, no need to reinvent and obfuscate the wheel.
– Brad Koch
Dec 21 '15 at 22:47
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Slicing of a NumPy 2d array, or how do I extract an mxm submatrix from an nxn array (n>m)?
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As Sven mentioned, x[[[0],[2]],[1,3]] will give back the 0 and 2 rows that match with the 1 and 3 columns while x[[0,2],[1,3]] will return the values x[0,1] and x[2,3] in an array.
There is a helpful function for doing the first example...
What is SaaS, PaaS and IaaS? With examples
...of these services is concerned, they all are popular. It's just that which one fits into your requirements better. For example, if you want to have a Hadoop cluster on which you would run MapReduce jobs, you will find EC2 a perfect fit, which is IaaS. On the other hand if you have some application, ...
Passing current scope to an AngularJS Service
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I would say if your functionality is specific to one controller only than you don't need a service.
The controllers tasks is to manipulate the specific model whereas a service should deal with global tasks. I would rather stick to this paradigm instead of mixing things up....
When to use nested classes and classes nested in modules?
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I have no idea how this answer got 60 upvotes, let alone did get accepted by the OP. There is literally not a single true statement in here. Ruby doesn't have nested classes like Beta or Newspeak do. There is absolutely no relation whatsoever between Car and Car::Wheel. Modules...
How can I match multiple occurrences with a regex in JavaScript similar to PHP's preg_match_all()?
...e URLSearchParams, which does all of this for us, so no custom code, let alone regex, are necessary anymore.
– Mike 'Pomax' Kamermans
Browser support is listed here https://caniuse.com/#feat=urlsearchparams
I would suggest an alternative regex, using sub-groups to capture name and valu...