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What is the rationale for all comparisons returning false for IEEE754 NaN values?
Why do comparisons of NaN values behave differently from all other values?
That is, all comparisons with the operators ==, =, where one or both values is NaN returns false, contrary to the behaviour of all other values.
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How do I get the filepath for a class in Python?
...ermine which file the class was defined in? I need something that can work from either the class C, or from an instance off C.
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Java generics - why is “extends T” allowed but not “implements T”?
...e with assignable to that other one (extends), or is this class assignable from that one (super).
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Best way to randomize an array with .NET
...rong. As noted in the MSDN documentation, you should use something derived from System.Security.Cryptography.RandomNumberGenerator if you're doing anything security-related. For example:
using System.Security.Cryptography;
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RNGCryptoServiceProvider rnd = new RNGCryptoServiceProvider();
string[] ...
Coding in Other (Spoken) Languages
... wondered, and I can't find any mention of it anywhere online. When a shop from, say Japan, writes code, would I be able to read it in English? Or do languages, like C, PHP, anything, have Japanese translations that they write?
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How to unsubscribe to a broadcast event in angularJS. How to remove function registered via $on
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You need to store the returned function and call it to unsubscribe from the event.
var deregisterListener = $scope.$on("onViewUpdated", callMe);
deregisterListener (); // this will deregister that listener
This is found in the source code :) at least in 1.0.4. I'll just post the full code...
Batch file to copy directories recursively
...copy all the files and subdirectories (including any empty subdirectories) from drive A to drive B, type:
xcopy a: b: /s /e
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FragmentPagerAdapter Exists Only In Android.Support.V4.App (and not Android.App)
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Ugh, you just need to use the FragmentPagerAdapter from the V13 support library
Android.Support.V13.App.FragmentPagerAdapter
Then all other Fragment related classes can be used from the "normal" libraries/namespaces, with the exception of ViewPager, but that's no big deal....
Do I need to close() both FileReader and BufferedReader?
...der.close() closes the underlying reader. Its description is simply copied from Reader.close(). This may be the actual behavior in practice, but it's not documented.
– John Kugelman
Mar 30 '15 at 22:12
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Efficient list of unique strings C#
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orderList.Add(item);
When removing items, make sure to remove them from both. Thus, as long as you can be sure that nothing else added items to the list, you'll have an insertion-ordered unique set!
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