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Why must wait() always be in synchronized block

...ait() only makes sense when there is also a notify(), so it's always about communication between threads, and that needs synchronization to work correctly. One could argue that this should be implicit, but that would not really help, for the following reason: Semantically, you never just wait(). Yo...
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How to set bootstrap navbar active class with Angular JS?

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SQL Server: Filter output of sp_who2

...HAR(MAX), BlkBy VARCHAR(MAX), DBName VARCHAR(MAX), Command VARCHAR(MAX), CPUTime INT, DiskIO INT, LastBatch VARCHAR(MAX), ProgramName VARCHAR(MAX), SPID_1 INT, REQUESTID INT ) INSERT INTO @Table EXEC sp_who2 SELECT * FROM ...
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How to programmatically take a screenshot on Android?

...new FileOutputStream(imageFile); int quality = 100; bitmap.compress(Bitmap.CompressFormat.JPEG, quality, outputStream); outputStream.flush(); outputStream.close(); openScreenshot(imageFile); } catch (Throwable e) { // Several error may come out wi...
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What is Delegate? [closed]

... known until runtime. So you use a "delegate" for that purpose. Delegates come in handy for things like event handlers, and such, where you do different things based on different events, for example. Here's a reference for C# you can look at: In C#, for example, let's say we had a calculation we ...
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Obtaining a powerset of a set in Java

... Yes, it is O(2^n) indeed, since you need to generate, well, 2^n possible combinations. Here's a working implementation, using generics and sets: public static <T> Set<Set<T>> powerSet(Set<T> originalSet) { Set<Set<T>> sets = new HashSet<Set<T>>(...
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Is there a documented way to set the iPhone orientation?

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Uninstall / remove a Homebrew package including all its dependencies

... EDIT: It looks like the issue is now solved using an external command called brew rmdeps or brew rmtree. To install and use, issue the following commands: $ brew tap beeftornado/rmtree $ brew rmtree <package> See the above link for more information and discussion. Original ...
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Processing $http response in service

...hen(function(d) { $scope.data = d; }); }); Here is a slightly more complicated version that caches the request so you only make it first time (http://plnkr.co/edit/2yH1F4IMZlMS8QsV9rHv?p=preview): app.factory('myService', function($http) { var promise; var myService = { async: funct...
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Command line progress bar in Java

I have a Java program running in command line mode. I would like to display a progress bar, showing the percentage of job done. The same kind of progress bar you would see using wget under unix. Is this possible? ...