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Fastest way to duplicate an array in JavaScript - slice vs. 'for' loop

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Ukkonen's suffix tree algorithm in plain English

...ere is one step for every character of the string. Each step might involve more than one individual operation, but we will see (see the final observations at the end) that the total number of operations is O(n). So, we start from the left, and first insert only the single character a by creating an...
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How to check what user php is running as?

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Is there a null-coalescing (Elvis) operator or safe navigation operator in javascript?

...on it is almost entirely about coffeescript rather than javascript, and is more than half about describing coffeescript benefits unrelated to the OP. I'd suggest boiling it down to just what's relevant to the question, as wonderful as coffeescript's other benefits are. – jingl...
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How to get the browser viewport dimensions?

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Installing PDO driver on MySQL Linux server

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Print a file's last modified date in Bash

... You can use the stat command stat -c %y "$entry" More info %y time of last modification, human-readable share | improve this answer | follow ...
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What do 3 dots next to a parameter type mean in Java?

... It means that zero or more String objects (or a single array of them) may be passed as the argument(s) for that method. See the "Arbitrary Number of Arguments" section here: http://java.sun.com/docs/books/tutorial/java/javaOO/arguments.html#vararg...
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Limit file format when using ?

...refer to these tables for file types and their magic numbers, to perform a more robust server-side verification. Here are three good reads on file-uploads and security. EDIT: Maybe file type verification using its binary signature can also be done on client side using JavaScript (rather than just b...
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Passing enum or object through an intent (the best solution)

...ill replace the calls with the code inside the function. The functions are more familiar as they are similar to the SDK ones. The IDE will autocomplete these functions which means there is no need to have previous knowledge of the utility class. One of the downsides is that, if we change the order...