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Why can't decimal numbers be represented exactly in binary?

...(and will do so if you try to divide 1 by that number). Although 0.1 is usually used as the simplest example of an exact decimal number which can't be represented exactly in binary floating point, arguably 0.2 is a simpler example as it's 1/5 - and 5 is the prime that causes problems between decimal...
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Tools for analyzing performance of a Haskell program

...ith +RTS -s $ time ./A +RTS -s ./A +RTS -s 749700 9,961,432,992 bytes allocated in the heap 2,463,072 bytes copied during GC 29,200 bytes maximum residency (1 sample(s)) 187,336 bytes maximum slop **2 MB** total memory in use (0 MB lost due to fragmentat...
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Nested select statement in SQL Server

... "Right, I'm an idiot! Thanks, will accept once allowed." Nah. Just ignorant. Like all of us. – Lucio Mollinedo Aug 21 '18 at 14:49 2 ...
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Using Rails 3.1 assets pipeline to conditionally use certain css

...oblem is that I want to have my site render the various CSS files conditionally. I’m using Blueprint CSS and I’m trying to have sprockets/rails render screen.css most of the time, print.css only when printing, and ie.css only when the site is accessed from Internet Explorer. ...
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How to read data when some numbers contain commas as thousand separator?

...u can have read.table or read.csv do this conversion for you semi-automatically. First create a new class definition, then create a conversion function and set it as an "as" method using the setAs function like so: setClass("num.with.commas") setAs("character", "num.with.commas", function(...
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Android adding simple animations while setvisibility(view.Gone)

...yout like changing view visibility or view positions android will automatically create fade/transition animations. To use that set android:animateLayoutChanges="true" on the root node in your layout. Your second option would be to manually add animations. For this I suggest you use the new anim...
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Default initialization of std::array?

...rantee that the syntax std::array<T, N> x; will default-initialize all the elements of the array ? 5 Answers ...
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Removing All Child Views from View

How would I remove all child views from a widget? For example, I have a GridView and I dynamically inflate many other LinearLayouts into it; later in my application I am looking to start fresh with that GridView and clear all of its child Views. How would I do this? TIA. ...
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What is the difference between `git fetch origin` and `git remote update origin`?

...ports grouped remotes (remotes.<group> = <list>), and updating all remotes (except those with remote.<name>.skipDefaultUpdate set), but not any of the more specific options of fetch. Under the hood, though, it does the exact same thing as fetch with the default options. The answe...
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Is there a way to automate the android sdk installation?

Now I have to download and install the Android SDK and AVD Manager, and then install the APIs, tools through the UI. Is there a way to automate this process? ...