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How can I tell Rails to use RSpec instead of test-unit when creating a new Rails app?

I have test-unit installed and rspec installed (along with -core , -expectations , -mocks and -rails version 2.6.x). When I run the command rails new foo , it uses test-unit to generate the test stub files instead of rspec . ...
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How can I mock requests and the response?

... And in Python 2.x, just replace from unittest import mock with import mock and the rest works as is. You do need to install the mock package separately. – haridsv Apr 2 '16 at 13:54 ...
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R programming: How do I get Euler's number?

... The R expression exp(1) represents e, and exp(2) represents e^2. This works because exp is the exponentiation function with base e. share | improve this answ...
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What does `kill -0 $pid` in a shell script do?

... 0 to a given PID just checks if any process with the given PID is running and you have the permission to send a signal to it. For more information see the following manpages: kill(1) $ man 1 kill ... If sig is 0, then no signal is sent, but error checking is still performed. ... kill(2) $ man...
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how to append a list object to another

in C++, I have two list<T> objects A and B and I want to add all the members of B to the end of A . I've searched a few different sources and haven't found a simple solution (e.i. A.append(B); ) and this surprises me a bit. ...
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How to do stateless (session-less) & cookie-less authentication?

Bob uses a web application in order to achieve something. And: 2 Answers 2 ...
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ADB Android Device Unauthorized

Since I reinstalled Eclipse (simply deleted and downloaded it again) I can't debug my applications on Samsung Galaxy i9001 (with CyanogenMod - Android 4.4.2). It worked fine before reinstallation. ...
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__proto__ VS. prototype in JavaScript

What are the differences between __proto__ and prototype ? 30 Answers 30 ...
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What are the barriers to understanding pointers and what can be done to overcome them? [closed]

Why are pointers such a leading factor of confusion for many new, and even old, college level students in C or C++? Are there any tools or thought processes that helped you understand how pointers work at the variable, function, and beyond level? ...
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UTF-8, UTF-16, and UTF-32

What are the differences between UTF-8, UTF-16, and UTF-32? 12 Answers 12 ...