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Rails Observer Alternatives for 4.0

With Observers officially removed from Rails 4.0 , I'm curious what other developers are using in their place. (Other than using the extracted gem.) While Observers were certainly abused and could easily become unwieldily at times, there were many use-cases outside of just cache-clearing where they...
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Using ChildActionOnly in MVC

When would you use the attribute ChildActionOnly ? What is a ChildAction and in what circumstance would you want restrict an action using this attribute? ...
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How to get current time and date in C++?

Is there a cross-platform way to get the current date and time in C++? 24 Answers 24 ...
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Send POST request using NSURLSession

Update: Solution found. You can read it at the end of the post. 7 Answers 7 ...
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Designing function f(f(n)) == -n

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Is “for(;;)” faster than “while (TRUE)”? If not, why do people use it?

I have seen this sort of thing used a lot, but I think it is rather strange... Wouldn't it be much clearer to say while(true) , or something along those lines? ...
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How can I use “sizeof” in a preprocessor macro?

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Accessing nested JavaScript objects and arays by string path

I have a data structure like this : 36 Answers 36 ...
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How to create a dialog with “yes” and “no” options?

I am going to make a button to take an action and save the data into a database. 13 Answers ...
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How to 'git pull' into a branch that is not the current one?

...n the master branch, it typically pulls from origin/master . I am in a different branch called newbranch , but I need to run a command that does a git pull from origin/master into master but I cannot run git checkout to change the selected branch until after the pull is complete. Is th...