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Checking Bash exit status of several commands efficiently

Is there something similar to pipefail for multiple commands, like a 'try' statement but within bash. I would like to do something like this: ...
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When should I use C++ private inheritance?

Unlike protected inheritance, C++ private inheritance found its way into mainstream C++ development. However, I still haven't found a good use for it. ...
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How to set default value for form field in Symfony2?

Is there an easy way to set a default value for text form field? 22 Answers 22 ...
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What is the purpose of the “final” keyword in C++11 for functions?

...to declare as non-virtual your final functions? Is there another thing I'm missing here? 10 Answers ...
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How to know user has clicked “X” or the “Close” button?

In MSDN I found CloseReason.UserClosing to know that the user had decided to close the form but I guess it is the same for both clicking the X button or clicking the close button. So how can I differentiate between these two in my code? ...
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Can I use Objective-C blocks as properties?

... @property (nonatomic, copy) void (^simpleBlock)(void); @property (nonatomic, copy) BOOL (^blockWithParamter)(NSString *input); If you are going to be repeating the same block in several places use a type def typedef void(^MyCompletionBlock...
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Understanding the Gemfile.lock file

After running the bundle install command, 'Gemfile.lock ' is created in the working directory. What do the directives inside that file mean? ...
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How does Google calculate my location on a desktop?

Right this is confusing me quite a bit, i'm not sure if any of you have noticed or used the "my location" feature on google maps using your desktop (or none GPS/none mobile device). If you have a browser with google gears (easiest to use is Google Chrome) then you will have a blue circle above the ...
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Correct use of Multimapping in Dapper

I'm trying to use the Multimapping feature of dapper to return a list of ProductItems and associated Customers. 6 Answers...
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Can a C++ enum class have methods?

I have an enum class with two values, and I want to create a method which receives a value and returns the other one. I also want to maintain type safety(that's why I use enum class instead of enums). ...