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In Jinja2, how do you test if a variable is undefined?

... From the Jinja2 template designer documentation: {% if variable is defined %} value of variable: {{ variable }} {% else %} variable is not defined {% endif %} ...
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Is there type Long in SQLite?

... 221 From the SQLite docs INTEGER. The value is a signed integer, stored in 1, 2, 3, 4, 6, or 8...
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Why does multiprocessing use only a single core after I import numpy?

... | edited Oct 22 '13 at 22:44 answered Mar 26 '13 at 15:36 ...
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Difference between var_dump,var_export & print_r

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How can I combine hashes in Perl?

... the best way to combine both hashes into %hash1? I always know that %hash2 and %hash1 always have unique keys. I would also prefer a single line of code if possible. ...
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Data structure for loaded dice?

... | edited Sep 12 '12 at 18:12 Peter Mortensen 26.5k2121 gold badges9292 silver badges122122 bronze badges ...
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How to subtract 2 hours from user's local time?

...e JavaScript code block that will allow me to display the local time minus 2 hours? 2 Answers ...
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How to check that a string is an int, but not a double, etc.?

...f it's wrong. PHP has is_int() , but that returns false for string like "2" . 26 Answers ...
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Asynchronous shell commands

... Carl NorumCarl Norum 195k2525 gold badges378378 silver badges444444 bronze badges ...
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Ineligible Devices section appeared in Xcode 6.x.x

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