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Why do Python's math.ceil() and math.floor() operations return floats instead of integers?

...d to first check that the input is within the representable integer range, then call the function; you would need to handle NaN and infinities in a separate code path. Additionally, you must have versions of ceil and floor which return floating-point numbers if you want to conform to IEEE 754. ...
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Is it possible for a computer to “learn” a regular expression by user-provided examples?

...ctable regular expression is to require you to list all possible matches. Then it could generate a search pattern that matches exactly those matches. If you don't want to list all possible matches, you need a higher-level description. That's exactly what regular expressions are designed to provid...
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How to avoid reverse engineering of an APK file?

...dd an external native library to your APK's library folder on every build, then you can use it by the below suggestion. Put the library in the native library path which defaults to "libs" in your project folder. If you built the native code for the 'armeabi' target then put it under libs/armeabi. I...
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Best Practices for Laravel 4 Helpers and Basic Functions?

... So i create a class called IDK... SiteHelpers and then define a method formatDate. and then in the template I should be able to do SiteHelpers::formatDate($date) ? – Jason Spick Jun 13 '13 at 17:26 ...
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Use a LIKE statement on SQL Server XML Datatype

...alue, and you can define that to be returned as a VARCHAR(), which you can then check with a LIKE statement. Mind you, this isn't going to be awfully fast. So if you have certain fields in your XML that you need to inspect a lot, you could: create a stored function which gets the XML and returns ...
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How do I sort an observable collection?

...extend ObservableCollection<T>. The GridView recognizes it just fine then. Then just hide it's methods, much like you do. I'll post a full solution when I have time. – Weston Oct 11 '13 at 1:18 ...
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Error in Swift class: Property not initialized at super.init call

...very property before being used. So Safety check 1 seems irrelevant, But then there could be another scenario, a little bit complex, class Shape { var name: String var sides : Int init(sides:Int, named: String) { self.sides = sides self.name = named printShape...
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CSS - Expand float child DIV height to parent's height

...arent { overflow: hidden; position: relative; width: 100%; } then for .child-right these: .child-right { background:green; height: 100%; width: 50%; position: absolute; right: 0; top: 0; } Find more detailed results with CSS examples here and more informatio...
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Iterate keys in a C++ map

...andard algorithms, so that they operate on the keys instead of the pairs), then take a look at Boost's transform_iterator. [Tip: when looking at Boost documentation for a new class, read the "examples" at the end first. You then have a sporting chance of figuring out what on earth the rest of it is...
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What is the purpose of flush() in Java streams?

... location) in our computer. When all the temporary memory location is full then we use flush(), which flushes all the streams of data and executes them completely and gives a new space to new streams in buffer temporary location. -Hope you will understand ...