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Installing specific package versions with pip

I'm trying to install version 1.2.2 of the MySQL_python adaptor, using a fresh virtualenv created with the --no-site-packages option. The current version shown in PyPi is 1.2.3 . Is there a way to install the older version? I found an article stating that this should do it: ...
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How to concatenate strings in twig

...like Alessandro said, and here it is in the documentation: ~: Converts all operands into strings and concatenates them. {{ "Hello " ~ name ~ "!" }} would return (assuming name is 'John') Hello John!. – http://twig.sensiolabs.org/doc/templates.html#other-operators And here is an example so...
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Conditions for automatic generation of default/copy/move ctor and copy/move assignment operator?

I want to refresh my memory on the conditions under which a compiler typically auto generates a default constructor, copy constructor and assignment operator. ...
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Set initial focus in an Android application

In my Android application it automatically focuses the first Button I have in my layout, giving it an orange outline. How can I set the initial focus preferably in XML, and can this be set to nothing? ...
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How to replace all occurrences of a character in string?

What is the effective way to replace all occurrences of a character with another character in std::string ? 15 Answers ...
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Setting dynamic scope variables in AngularJs - scope.

...one please add a new answer to the question! Here is the example: var the_string = 'life.meaning'; // Get the model var model = $parse(the_string); // Assigns a value to it model.assign($scope, 42); // Apply it to the scope // $scope.$apply(); <- According to comments, this is no longer need...
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Flask-SQLAlchemy how to delete all rows in a single table

How do I delete all rows in a single table using Flask-SQLAlchemy? 3 Answers 3 ...
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How to use ArrayAdapter

...created row.xml in layouts, but don't know how to show both reason and long_val in the ListView using ArrayAdapter. 5 Answe...
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How to prevent vim from creating (and leaving) temporary files?

... I added this to my _vimrc file on Windows, and I'm still getting file~ files. Am I not doing something correctly? – FilBot3 Aug 26 '15 at 14:48 ...
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Find all files in a directory with extension .txt in Python

How can I find all the files in a directory having the extension .txt in python? 26 Answers ...