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How do I call ::std::make_shared on a class with only protected or private constructors?

..., and the one I'll likely accept. But I also came up with a method that's uglier, but does still let everything still be inline and doesn't require a derived class: #include <memory> #include <string> class A { protected: struct this_is_private; public: explicit A(const this_i...
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cannot load such file — zlib even after using rvm pkg install zlib

I installed zlib package and ruby 1.9.3 using rvm, but whenever I try to install gems it says cannot load such file -- zlib ...
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Why is it string.join(list) instead of list.join(string)?

... It's because any iterable can be joined (e.g, list, tuple, dict, set), but the result and the "joiner" must be strings. For example: '_'.join(['welcome', 'to', 'stack', 'overflow']) '_'.join(('welcome', 'to', 'stack', 'overflow')) 'welcome_to_stack_overflow' Usi...
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How to fix the flickering in User controls

In my application i am constantly moving from one control to another. I have created no. of user controls, but during navigation my controls gets flicker. it takes 1 or 2 sec to update. I tried to set this ...
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Ways to iterate over a list in Java

Being somewhat new to the Java language I'm trying to familiarize myself with all the ways (or at least the non-pathological ones) that one might iterate through a list (or perhaps other collections) and the advantages or disadvantages of each. ...
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What is a pre-revprop-change hook in SVN, and how do I create it?

I wanted to edit a log comment in the repository browser and received an error message that no pre-revprop-change hook exists for the repository. Besides having a scary name, what is a pre-revprop-change hook, and how do I create it? ...
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How to split a dos path into its components in Python

I have a string variable which represents a dos path e.g: 19 Answers 19 ...
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Get the current displaying UIViewController on the screen in AppDelegate.m

... on the screen need to response to push-notifications from APNs, by setting some badge views. But how could I get the UIViewController in method application:didReceiveRemoteNotification : of AppDelegate.m ? ...
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Should I impose a maximum length on passwords?

I can understand that imposing a minimum length on passwords makes a lot of sense (to save users from themselves), but my bank has a requirement that passwords are between 6 and 8 characters long, and I started wondering... ...
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Draw on HTML5 Canvas using a mouse

I want to draw on a HTML Canvas using a mouse (for example, draw a signature, draw a name, ...) 13 Answers ...