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Combining two lists and removing duplicates, without removing duplicates in original list

... 172 You need to append to the first list those elements of the second list that aren't in the first ...
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Show a number to two decimal places

... 24 Answers 24 Active ...
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Difference between break and continue statement

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Cartesian product of multiple arrays in JavaScript

... 2020 Update: 1-line (!) answer with vanilla JS Original 2017 Answer: 2-line answer with vanilla JS: (see updates below) All of the answers here are overly complicated, most of them take 20 lines of code or even more. This exa...
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List comprehension: Returning two (or more) items for each item

Is it possible to return 2 (or more) items for each item in a list comprehension? 6 Answers ...
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Remove empty elements from an array in Javascript

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Version of Apache installed on a Debian machine

... Try apachectl -V: $ apachectl -V Server version: Apache/2.2.9 (Unix) Server built: Sep 18 2008 21:54:05 Server's Module Magic Number: 20051115:15 Server loaded: APR 1.2.7, APR-Util 1.2.7 Compiled using: APR 1.2.7, APR-Util 1.2.7 ... etc ... If it does not work for you, run th...
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Determine device (iPhone, iPod Touch) with iOS

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How to join two sets in one line without using “|”

... 320 You can use union method for sets: set.union(other_set) Note that it returns a new set i.e it ...
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How can I exclude all “permission denied” messages from “find”?

... 275 +100 Note: ...