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How do you rotate a two dimensional array?

...e. Printing the matrix is the same complexitiy – Alejandro Aug 4 '15 at 20:34 6 For a -90 degrees...
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Why rgb and not cmy? [closed]

Seeing as how the three primary colors are cyan, magenta and yellow (CMY), why do monitors and almost all the GUI components out there use red, green and blue (RGB)? (If I'm not mistaken, printers use the CMYK model.) ...
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Why use getters and setters/accessors?

What's the advantage of using getters and setters - that only get and set - instead of simply using public fields for those variables? ...
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Relational table naming convention [closed]

I'm starting a new project and would like to get my table- and column names right from the start. For example I've always used plural in table names but recently learned singular is correct. ...
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Is a successor for TeX/LaTeX in sight? [closed]

...ded for the creation of beautiful books". The goal of TeX was typesetting, and its primary concerns were things like "Breaking Paragraphs Into Lines" (Donald E. Knuth and Michael F. Plass, Software--Practice and Experience, Vol. 11, pp. 1119-1184, 1981), ligatures, kerning, beautiful fonts (Knuth wo...
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Renaming xcode 4 project and the actual folder

... You can do this from within Xcode without resorting to hand editing the pbxproj file in a text editor! Here's how: Rename your source folder in the Finder. This will break the project initially because Xcode doesn't automatically detect when the real folders that the virtual (y...
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What is the difference between Amazon SNS and Amazon SQS?

I don't understand when I would use SNS versus SQS, and why are they always coupled together? 6 Answers ...
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Difference between Python's Generators and Iterators

What is the difference between iterators and generators? Some examples for when you would use each case would be helpful. 1...
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Git in Visual Studio - add existing project?

...→ Team Explorer, then double click the repository for your project file, and make your initial commit (making sure to add whatever files you'd like). share | improve this answer | ...
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Secure hash and salt for PHP passwords

...nswer was written in 2008. Since then, PHP has given us password_hash and password_verify and, since their introduction, they are the recommended password hashing & checking method. The theory of the answer is still a good read though. TL;DR Don'ts Don't limit what characters user...