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What does the ^ operator do in Java?

...y for this task. Horner's scheme Addressing your specific need, you actually don't need to compute various powers of 10. You can use what is called the Horner's scheme, which is not only simple but also efficient. Since you're doing this as a personal exercise, I won't give the Java code, but he...
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Finding the number of days between two dates

... What about leap seconds? Not all days have exactly 24*60*60 seconds. This code might be sufficient for practical purposes but it's not exact in sone extremely rare edge cases. – Benjamin Brizzi Aug 1 '12 at 8:15 ...
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Reference: Comparing PHP's print and echo

...hat while they appear to users as two distinct constructs, they are both really shades of echo if you get down to basics, i.e. look at the internal source code. That source code involves the parser as well as opcode handlers. Consider a simple action such as displaying the number zero. Whether you ...
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How do I toggle an element's class in pure JavaScript?

... Thank you so much! It's working now :) I add more option for loop: var All = document.querySelectorAll('.menu'); for (var i = 0; i < All.length; i++){ All[i].classList.toggle('hidden-phone'); } – Blue Tram Feb 1 '19 at 3:52 ...
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Code block in numbered list (Wiki syntax)

...two It is not perfect, because you end up with a more indent but it does allow one to use the wiki syntax for correctly formatted pre blocks over multiple lines. As previously mentioned, the other proper way would be to use HTML mark up. <ol> <li>one</li> <li>two</li&g...
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Git: Cannot see new remote branch

... First, double check that the branch has been actually pushed remotely, by using the command git ls-remote origin. If the new branch appears in the output, try and give the command git fetch: it should download the branch references from the remote repository. If your remot...
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Git push branch from one remote to another?

...hecking in my rorg remote: pat@host /tmp/rorg (BARE:master) $ git graph --all * 5750bca (HEAD, master) c | * 13fd55a (one) b |/ * 822e0de a share | improve this answer | fo...
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Are std::vector elements guaranteed to be contiguous?

...e in the middle take linear time. Storage management is handled automatically, though hints can be given to improve efficiency. The elements of a vector are stored contiguously, meaning that if v is a vector where T is some type other than bool, then it obeys the identity &v[n] == &v[0...
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Difference between Select and ConvertAll in C#

... Select is a LINQ extension method and works on all IEnumerable<T> objects whereas ConvertAll is implemented only by List<T>. The ConvertAll method exists since .NET 2.0 whereas LINQ was introduced with 3.5. You should favor Select over ConvertAll as it works ...
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How can I pad a value with leading zeros?

... If performance is a concern for you, don't use this solution! Potentially outdated: ECMAScript 2017 includes String.prototype.padStart and Number.prototype.toLocaleString is there since ECMAScript 3.1. Example: var n=-0.1; n.toLocaleString('en', {minimumIntegerDigits:4,minimumFractionDigits:2...