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How to Sort a List by a property in the object
...ory you are using is not an issue, this solution avoids unnecessary memory allocation which is EXTREMELY expensive. This option is just as simple codewise and an order of magnitude faster.
– Cdaragorn
Dec 14 '16 at 20:58
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Looping a video with AVFoundation AVPlayer?
...and in its selector, loop your video
AVPlayerItem *video = [[AVPlayerItem alloc] initWithURL:videoURL];
[self.player insertItem:video afterItem:nil];
[self.player play];
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How do I find the length of an array?
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Doing sizeof( myArray ) will get you the total number of bytes allocated for that array. You can then find out the number of elements in the array by dividing by the size of one element in the array: sizeof( myArray[0] )
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Using Java 8 to convert a list of objects into a string obtained from the toString() method
...d guess that iterative string concatenation (reduction) requires array (re)allocation at each iteration, which makes it O(n^2). join on the other side would preallocate a single array large enough to store the final string before populating it, making it O(n).
– Eli Korvigo
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How to set selected value of jquery select2?
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Html:
<select id="lang" >
<option value="php">php</option>
<option value="asp">asp</option>
<option value="java">java</option>
</select>
JavaScript:
$("#lang").select2().select2('val','asp');
jsfiddle
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how to stop browser back button using javascript
I am doing an online quiz app in php. I want to restrict the user from going back in an exam.
I have tried the following script but it stops my timer.
What should I do?
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Importance of varchar length in MySQL table
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+1. I've also seem some JDBC drivers that allocate enough space for the maximum size when setting up buffers to retrieve rows. Needless to say, this causes much angst and gnashing of teeth when some clown has just done varchar(50000) just in case someone has a really...
How can I create a two dimensional array in JavaScript?
...st dimension values initialized to run .map. Remember that Array will not allocate the positions until you order it to through .fill or direct value assignment.
var arr = Array(2).fill(null).map(() => Array(4));
arr[0][0] = 'foo';
console.info(arr);
Follow up
Here's a method tha...
Identify duplicates in a List
...timal solution (instead of sorting the input) then you'll also want to pre-allocate the size of the HashSet() objects. Without the preallocation, you don't get O(1) insert time when inserting into the HashSet(). This is because the internal hash array gets repeatedly resized. The inserts then averag...
How does the algorithm to color the song list in iTunes 11 work? [closed]
...hm to get the dominant color in the two lateral borders of a picture using PHP and Imagick.
https://gist.github.com/philix/5688064#file-simpleimage-php-L81
It's being used to fill the background of cover photos in http://festea.com.br
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