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How to round up to the nearest 10 (or 100 or X)?

... ..but if you want to round to a "nice" number, you first need to define what a "nice" number is. The following lets us define "nice" as a vector with nice base values from 1 to 10. The default is set to the even numbers plus 5. roundUpNice <- function(x, nice=c(1,2,4,5,6,8,10)) { if(lengt...
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What is the difference between typeof and instanceof and when should one be used vs. the other?

...n it comes to custom types, as well as the benefit for 'object' types. But what makes functions lumped in with "simple built-in types"? I find it odd how a function behaves like an object, yet it's type is 'function' making the use of 'typeof' feasible. Why would you discourage instanceof for it, th...
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How to Flatten a Multidimensional Array?

... Building on what others presented, I was able to craft this little helper: function flatten($arr){ $it = new RecursiveIteratorIterator(new RecursiveArrayIterator($arr)); return iterator_to_array($it, true); } Hope this helps othe...
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How to convert a string to an integer in JavaScript?

... what about '' , or '02" or "02+1" , or "03,12" or "03.12"? – stackdave Oct 20 '17 at 6:47 3 ...
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Fit Image in ImageButton in Android

... it is not scaled by the user's text size preference. Here's a snippet of what each button should look like: <ImageButton android:id="@+id/button_topleft" android:layout_width="0dp" android:layout_height="match_parent" android:layout_marginBottom="5dp" ...
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Detecting touch screen devices with Javascript

...s_touch_device() { return !!('ontouchstart' in window); } See article: What's the best way to detect a 'touch screen' device using JavaScript? share | improve this answer | ...
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Which keycode for escape key with jQuery

...ressed the functions runs correctly but when escape is pressed it doesn't. What's the correct number for the escape key? ...
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How to get the current user in ASP.NET MVC

...ser property of Controller. If you need it from the view, I would populate what you specifically need in the ViewData, or you could just call User as I think it's a property of ViewPage. share | imp...
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What is the difference between bottom-up and top-down?

... may be infinitely large. Furthermore, in some problems you might not know what the full tree looks like ahead of time. Thus, you might need a strategy/algorithm to decide which subproblems to reveal.) Memoization, Tabulation There are at least two main techniques of dynamic programming which ar...
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Learning WebGL and three.js [closed]

...u have to invest the time to learn the fundamentals. It is not a matter of what you learn first -- you can learn them simultaneously if you want to. (That's what I did.) This means that you need to understand: WebGL concepts Three.js The underlying mathematical concepts Three.js. Three.js does ...