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cannot load such file — bundler/setup (LoadError)

I'm setting Rails 4 application with Ruby 2.0, but I'm getting "Web application could not be started" and get this trace: 1...
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Are list-comprehensions and functional functions faster than “for loops”?

In terms of performance in Python, is a list-comprehension, or functions like map() , filter() and reduce() faster than a for loop? Why, technically, they run in a C speed , while the for loop runs in the python virtual machine speed ?. ...
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Opening port 80 EC2 Amazon web services [closed]

I've opened port 80 in the web console on my E2C instance's security group but I still can't access it via the public dns in the browser. ...
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Laravel blank white screen

My laravel site was working before, I recently upgraded to Apache 2.4 and PHP 5.5.7. 31 Answers ...
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Check whether a cell contains a substring

Is there an in-built function to check if a cell contains a given character/substring? 9 Answers ...
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Convert NSDate to NSString

How do I convert, NSDate to NSString so that only the year in @"yyyy" format is output to the string? 14 Answers ...
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What is the best way to convert seconds into (Hour:Minutes:Seconds:Milliseconds) time?

What is the best way to convert seconds into (Hour:Minutes:Seconds:Milliseconds) time? 13 Answers ...
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mongo - couldn't connect to server 127.0.0.1:27017

I am coming from riak and redis where I never had an issue with this services starting, or to interact. 38 Answers ...
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Vim: insert the same characters across multiple lines

Sometimes I want to edit a certain visual block of text across multiple lines. 12 Answers ...
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What is the best way to concatenate two vectors?

I'm using multitreading and want to merge the results. For example: 8 Answers 8 ...