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How to select last two characters of a string

... EDIT: 2020: use string.slice(-2) as others say - see below. now 2016 just string.substr(-2) should do the trick (not substring(!)) taken from MDN Syntax str.substr(start[, length]) Parameters start Location at which to begin extracting characters. If a negati...
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Real World Example of the Strategy Pattern

...ect strategy instance for the cipher. I hope this helps. ( I don't even know if Cipher is the right word :P ) share | improve this answer | follow | ...
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Google Play on Android 4.0 emulator

... For future visitors. As of now Android 4.2.2 platform includes Google Play services. Just use an emulator running Jelly Bean. Details can be found here: Setup Google Play Services SDK EDIT: Another option is to use Genymotion (runs way faster) EDIT...
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Enabling HTTPS on express.js

...ert: cert }; app = express() app.get('/', (req, res) => { res.send('Now using https..'); }); var server = https.createServer(options, app); server.listen(port, () => { console.log("server starting on port : " + port) }); Finally run your application using https. More informatio...
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What's the fastest way to loop through an array in JavaScript?

... The blog post this answer is based on is now almost 4 years old, and a lot has changed in js engines in that time, see my answer below for an updated comparison. – jondavidjohn Aug 31 '11 at 3:01 ...
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What does character set and collation mean exactly?

...ation of all four letters and their encodings is a character set. Now, suppose that we want to compare two string values, 'A' and 'B'. The simplest way to do this is to look at the encodings: 0 for 'A' and 1 for 'B'. Because 0 is less than 1, we say 'A' is less than 'B'. Now, what...
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How do I clone a Django model instance object and save it to the database?

... Worth noting that this quotes Django 1.2, we're now up to Django 1.4. Haven't tested whether or not this works, but don't use this answer without being sure that it works for you. – Joe Oct 4 '12 at 11:37 ...
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Legality of COW std::string implementation in C++11

... whole point of doing the copying is that such references or iterators are now being obtained, so copying is necessary. But it may still be that C++11 disallows COW implementations. – Cheers and hth. - Alf Dec 18 '14 at 3:57 ...
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SHA512 vs. Blowfish and Bcrypt [closed]

...ccur through an implementation flaw, not cryptanalysis. If you insist on knowing which is "better", SHA-512 has had in-depth reviews by NIST and others. It's good, but flaws have been recognized that, while not exploitable now, have led to the the SHA-3 competition for new hash algorithms. Also, ke...
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OAuth with Verification in .NET

...ny, there's a special name and it looks like a "standard" but as far as I know the only service that implements "OAuth 1.0a" is Twitter. I guess that's standard enough. ok, anyway in OAuth 1.0a, the way it works for desktop apps is this: You, the developer of the app, register the app and get a...