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What is the “N+1 selects problem” in ORM (Object-Relational Mapping)?
...good about indexes, doing the query for a specific CarID would return very fast. But if you got all the Wheels are once, you would have to search for CarID in your application, which is not indexed, this is slower. Unless you have major latency issues reaching your database going n + 1 is actually f...
How to search by key=>value in a multidimensional array in PHP
Is there any fast way to get all subarrays where a key value pair was found in a multidimensional array? I can't say how deep the array will be.
...
Separate REST JSON API server and client? [closed]
...or your own web client, mobile clients, 3rd party access, etc.
exceedingly fast site loading / page transitions
Cons:
Not SEO friendly/ready without a lot more work.
Requires top-notch web front-end folk who are ready to cope w/ the reality of a site experience that is 70% javascript and what th...
jQuery, get html of a whole element [duplicate]
... the standard DOM functionality
$("#el")[0].outerHTML
is about twice as fast as
$("<div />").append($("#el").clone()).html();
so I would go with:
/*
* Return outerHTML for the first element in a jQuery object,
* or an empty string if the jQuery object is empty;
*/
jQuery.fn.outer...
gitx How do I get my 'Detached HEAD' commits back into master [duplicate]
...wise use git reflog or git log -p to find them). Use git merge HEAD@{1} to fast forward them into master.
EDIT:
As noted in the comments, Git Ready has a great article on this.
git reflog and git reflog --all will give you the commit hashes of the mis-placed commits.
Source: http://gitready.co...
How to merge images in command line? [closed]
... This works, but for huge files takes a lot of time. IS there way to fast compositing?
– Vlad Tsepelev
May 19 '17 at 11:56
...
Async Image Loader Extension：异步图像加载器扩展 - App Inventor 2 拓展...
...angement component with circular image. This is a simple, light weight and fast async image loader since it does not uses any external library to load images.
Specifications[size=15.008px] Size: 9.36 KB
Version: 5.0
Minimum API Level: 7
Updated On: February 18, 2025 (Calcutta)
B...
Different types of thread-safe Sets in Java
...and writers (though writing itself needs to be synchronized). The normally fast set operations (especially contains()) are quite slow here, as the arrays will be searched in linear time.
Use this only for really small sets which will be read (iterated) often and changed seldom. (Swings listener-set...
Fetch frame count with ffmpeg
...am=nb_frames -of default=nokey=1:noprint_wrappers=1 input.mp4
This is a fast method.
Not all formats (such as Matroska) will report the number of frames resulting in the output of N/A. See the other methods listed below.
ffprobe: Count the number of frames
ffprobe -v error -count_frames -selec...
Fixing slow initial load for IIS
...out, should be enough so that subsequent requests to the server are served fast (restarting the app pool takes quite some time - in the order of seconds).
As far as I know, the timeout exists to save memory that other websites running in parallel on that machine might need. The price being that one...