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What is the difference between the | and || or operators?

I have always used || (two pipes) in OR expressions, both in C# and PHP. Occasionally I see a single pipe used: | . What is the difference between those two usages? Are there any caveats when using one over the other or are they interchangeable? ...
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How do I output coloured text to a Linux terminal?

..., ASCII 27. It is followed by [, then zero or more numbers separated by ;, and finally the letter m. The numbers describe the colour and format to switch to from that point onwards. The codes for foreground and background colours are: foreground background black 30 40 red ...
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What is the difference between 'java', 'javaw', and 'javaws'?

What is the difference between java , javaw , and javaws ? 5 Answers 5 ...
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jQuery - What are differences between $(document).ready and $(window).load?

...$(document).ready(function() { // executes when HTML-Document is loaded and DOM is ready console.log("document is ready"); }); $(window).load(function() { // executes when complete page is fully loaded, including all frames, objects and images console.log("window is loaded"); }); ...
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How do I set the version information for an existing .exe, .dll?

...e of the binaries already have version information (added at compile time) and some do not. 14 Answers ...
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What is the difference between HashSet and List?

Can you explain what is the difference between HashSet<T> and List<T> in .NET? 8 Answers ...
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Auto expand a textarea using jQuery

How can I make a textarea automatically expand using jQuery? 31 Answers 31 ...
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How to split/partition a dataset into training and test datasets for, e.g., cross validation?

What is a good way to split a NumPy array randomly into training and testing/validation dataset? Something similar to the cvpartition or crossvalind functions in Matlab. ...
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How do I install Python OpenCV through Conda?

...to import cv2.cv (am I missing something obvious?) – Andy Hayden Aug 13 '15 at 5:03 2 This works ...
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AES Encryption for an NSString on the iPhone

...ethod which takes two NSString instances, one being the message to encrypt and the other being a 'passcode' to encrypt it with - I suspect I'd have to generate the encryption key with the passcode, in a way that can be reversed if the passcode is supplied with the encrypted data. The method should t...