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What is event bubbling and capturing?

...ed a handle for that event. The event propagation mode determines in which order the elements receive the event. With bubbling, the event is first captured and handled by the innermost element and then propagated to outer elements. With capturing, the event is first captured by the outermost eleme...
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Remove multiple elements from array in Javascript/jQuery

...plice(removeValFromIndex[i],1); Go through removeValFromIndex in reverse order and you can .splice() without messing up the indexes of the yet-to-be-removed items. Note in the above I've used the array-literal syntax with square brackets to declare the two arrays. This is the recommended syntax b...
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How to get the difference between two arrays in JavaScript?

... operation, because property lookup is the very own job of Sets, which are orders of magnitude faster then indexOf/includes. Simply put, your solution is very inefficient and rather slow. – user6445533 Oct 18 '16 at 19:35 ...
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Smooth GPS data

... kalman.sourceforge.net/index.php here is C++ implementation of Kalman filter. – Rostyslav Druzhchenko Aug 21 '14 at 9:04 1 ...
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Possible reason for NGINX 499 error codes

...timeout error in your browser which indicates that something is wrong with php-fpm but that will not be the case with 499 errors in your log files. share | improve this answer | ...
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How do I use boolean variables in Perl?

... native boolean type, but you can use comparison of integers or strings in order to get the same behavior. Alan's example is a nice way of doing that using comparison of integers. Here's an example my $boolean = 0; if ( $boolean ) { print "$boolean evaluates to true\n"; } else { print "$boo...
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NoSQL (MongoDB) vs Lucene (or Solr) as your database

...tially update a document in solr. You have to re-post all of the fields in order to update a document. And performance matters. If you do not commit, your change to solr does not take effect, if you commit every time, performance suffers. There is no transaction in solr. As solr has these disadvanta...
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Suppressing “is never used” and “is never assigned to” warnings in C#

... Caveat: As per the comment by @Jon Hanna, perhaps a few warnings is in order for this, for future finders of this question and answer. First, and foremost, the act of suppressing a warning is akin to swallowing pills for headache. Sure, it might be the right thing to do sometimes, but it's not...
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How is an HTTP POST request made in node.js?

... now deprecated. It is recommended you use an alternative In no particular order and dreadfully incomplete: native HTTP/S, const https = require('https'); node-fetch axios got superagent bent make-fetch-happen unfetch tiny-json-http needle urllib Stats comparision Some code examples Original answe...
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Best way to define error codes/strings in Java?

...de instead of using the ordinal value - this makes it easier to change the order and add/remove errors later. Don't forget that this isn't internationalised at all - but unless your web service client sends you a locale description, you can't easily internationalise it yourself anyway. At least they...