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Passing references to pointers in C++

As far as I can tell, there's no reason I shouldn't be allowed to pass a reference to a pointer in C++. However, my attempts to do so are failing, and I have no idea why. ...
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What is the easiest way to duplicate an activerecord record?

I want to make a copy of an activerecord record, changing a single field in the process (in addition to the id ). What is the simplest way to accomplish this? ...
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Algorithms based on number base systems? [closed]

...noticed recently that there are a great many algorithms out there based in part or in whole on clever uses of numbers in creative bases. For example: ...
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NoClassDefFoundError: android.support.v7.internal.view.menu.MenuBuilder

There is an issue with the Android appcompat v7 library on Samsung devices running Android 4.2. I keep getting crashes with the following stack trace in my Developer Console: ...
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How to add a custom right-click menu to a webpage?

I want to add a custom right-click menu to my web application. Can this be done without using any pre-built libraries? If so, how to display a simple custom right-click menu which does not use a 3rd party JavaScript library? ...
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How to send a command to all panes in tmux?

I like to call :clear-history on panes with a huge scrollback. However, I want to script a way to send this command to all the panes in the various windows. ...
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What's the difference between an object initializer and a constructor?

...working with C#, if that matters. Also, is the object initializer method specific to C# or .NET? 7 Answers ...
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What is the difference between window, screen, and document in Javascript?

... Window is the main JavaScript object root, aka the global object in a browser, also can be treated as the root of the document object model. You can access it as window window.screen or just screen is a small information object about physical screen ...
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Android Writing Logs to text File

...en this method creates file but contains nothing. Basically I want to read previous contents of the file and then append my data with the existing content. ...
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Can someone explain how to implement the jQuery File Upload plugin?

...ck and came across a good tutorial on tutorialzine. Here is an working example. Complete tutorial can be found here. Simple form to hold the file upload dialogue: <form id="upload" method="post" action="upload.php" enctype="multipart/form-data"> <input type="file" name="uploadctl" multi...