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Most efficient method to groupby on an array of objects

...ailed to understand how in the world does it work starting from ...result. Now I can't sleep because of that. – user3307073 Mar 29 '19 at 9:26 ...
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How to detect orientation change?

...on while using the camera with AVFoundation, and found that the didRotate (now deprecated) & willTransition methods were unreliable for my needs. Using the notification posted by David did work, but is not current for Swift 3.x/4.x. Swift 4.2 The notification name has been changed. The closure...
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Ruby: Can I write multi-line string with no concatenation?

... In ruby 2.0 you can now just use % For example: SQL = %{ SELECT user, name FROM users WHERE users.id = #{var} LIMIT #{var2} } share ...
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Why is it impossible to override a getter-only property and add a setter? [closed]

...to (since the Baseclass explicitly states that it is a get only property). Now with your derivation, my code may break. e.g. public class BarProvider { BaseClass _source; Bar _currentBar; public void setSource(BaseClass b) { _source = b; _currentBar = b.Bar; } public Bar getBar(...
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When using Spring Security, what is the proper way to obtain current username (i.e. SecurityContext)

I have a Spring MVC web app which uses Spring Security. I want to know the username of the currently logged in user. I'm using the code snippet given below . Is this the accepted way? ...
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NoClassDefFoundError - Eclipse and Android

...its build path, was working fine. Since having added the scoreninja jar, I now get a NoClassDefFoundError when I try to run the app. ...
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Visual Studio debugging “quick watch” tool and lambda expressions

...e function Example is run in the debugger it will stop at the Break line. Now imagine if the user typed the following into the watch window (Func<int>)(() => v2); In order to properly execute this the debugger (or more appropriate the EE) would need to create a closure for variable v2. ...
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How to stop /#/ in browser with react-router?

...outer>. From the histories documentation: In a nutshell, a history knows how to listen to the browser's address bar for changes and parses the URL into a location object that the router can use to match routes and render the correct set of components. Versions 2 and 3 In react-router 2 and...
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How to add a custom Ribbon tab using VBA?

...ustom Tab. You will notice that the basic code is automatically generated. Now you are all set to edit it as per your requirements. Let's inspect the code label="Custom Tab": Replace "Custom Tab" with the name which you want to give your tab. For the time being let's call it "Jerome". The belo...
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Artificially create a connection timeout error

...d got the timeout. That worked for me too. emu's solution gave me me an UnknownHostException on Android. – Barry Fruitman Feb 26 '16 at 23:39 2 ...