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Why is MATLAB so fast in matrix multiplication?
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This kind of question is recurring and should be answered more clearly than "MATLAB uses highly optimized libraries" or "MATLAB uses the MKL" for once on Stack Overflow.
History:
Matrix multiplication (together with Matrix-vector, vector-vector multiplication and many of the matri...
Application Skeleton to support multiple screens
...oshop because it will resize automatically your image with Actions and one more plus point is that you need not to rename the file(it will assign same name as original one).
once you completed with creation of all images, refresh your project and test it.
Sometimes there may be possibility that th...
WebSockets vs. Server-Sent events/EventSource
...one with SSE can also be done with Websockets, Websockets is getting a lot more attention and love, and many more browsers support Websockets than SSE.
However, it can be overkill for some types of application, and the backend could be easier to implement with a protocol such as SSE.
Furthermore ...
How to check whether a given string is valid JSON in Java
...but is missing a validation for a JSONArray (i've updated this post with a more suitable function)
– Arthur
Dec 6 '13 at 20:48
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What are the benefits of dependency injection containers?
... that has its roots in the observation that object delegation is usually a more useful design pattern than object inheritance (i.e., the object has-a relationship is more useful than the object is-a relationship). One other ingredient is necessary however for DI to work, that of creating object int...
How to find patterns across multiple lines using grep?
...abc.*(\n|.)*efg' test.txt
where -M, --multiline allow patterns to match more than one line
There is a newer pcre2grep also. Both are provided by the PCRE project.
pcre2grep is available for Mac OS X via Mac Ports as part of port pcre2:
% sudo port install pcre2
and via Homebrew as:
% brew ...
Tools for JPEG optimization? [closed]
...progressive, but that might cause compatibility problems (does anyone know more about that?)
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Xcode - How to fix 'NSUnknownKeyException', reason: … this class is not key value coding-compliant f
... file.
Remove it in .xib or .storyboard file's Connection Inspector.
One more possible reason
(In my case) Extension of UIView with bindable properties and setting values for those bindable properties (i.e. shadow, corner radius etc.) then remove those properties from UIView extension (for some...
“elseif” syntax in JavaScript
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@Mark It more shows a misunderstanding of bracketing. Brackets aren't necessary for if/else blocks, but people are encouraged to use them, so I can understand why this looks incorrect to a new user.
– user764357
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Count number of lines in a git repository
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xargs will do what you want:
git ls-files | xargs cat | wc -l
But with more information and probably better, you can do:
git ls-files | xargs wc -l
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