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Call a python function from jinja2

...nforce the opinion that less logic in templates is a good thing. You can manipulate the global namespace within an Environment instance to add references to your functions. It must be done before you load any templates. For example: from jinja2 import Environment, FileSystemLoader def clever_func...
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What is Serialization?

...th Object-Oriented Programming (OOP) and would like to know: what is the meaning of serialization in OOP parlance? 15 Answe...
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How to get the first line of a file in a bash script?

...because each of the components in a pipe will run in separate subshells. Meaning that $VAR will be set in subshell (that cease to exist as soon as the pipeline has finished executing) rather than in the invoking shell. You can get around this with read VAR <<EOF\n$(cat ...)\nEOF (where each \n...
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filter for complete cases in data.frame using dplyr (case-wise deletion)

Is it possible to filter a data.frame for complete cases using dplyr? complete.cases with a list of all variables works, of course. But that is a) verbose when there are a lot of variables and b) impossible when the variable names are not known (e.g. in a function that processes any data.frame). ...
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Nginx serves .php files as downloads, instead of executing them

I am installing a website in a droplet (Digital Ocean). I have a issue for install NGINX with PHP properly. I did a tutorial https://www.digitalocean.com/community/tutorials/how-to-install-linux-nginx-mysql-php-lemp-stack-on-ubuntu-14-04 but when I try to run some .php file it's just downloading i...
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How to refer to relative paths of resources when working with a code repository

...case that every programmer, even one who never read any python knows the meaning of "..", while "os.pardir" is a level o f indirection one would have to look up in the documentation so personally I'd stick to "..". – c089 Mar 24 '13 at 10:07 ...
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What approaches are available to dummy design-time data in WPF?

I am working without expression blend and just using the XAML editor in vs2010. The wisdom of this aside, I am increasingly seeing a need for design-time data binding. For simple cases, the FallbackValue property works very nicely (Textboxes and TextBlocks, etc). But especially when dealing with ...
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Add and remove multiple classes in jQuery

I'm trying to add and remove multiple classes on a text field by clicking different radio buttons. I'm not able to remove the unwanted classes while switching between different radio buttons. ...
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Bad value X-UA-Compatible for attribute http-equiv on element meta

I have used the same meta that HTML5 Boilerplate is using, and the W3C HTML validator complains: 8 Answers ...
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Best design for a changelog / auditing database table? [closed]

I need to create a database table to store different change log/auditing (when something was added, deleted, modified, etc). I don't need to store particularly detailed info, so I was thinking something along the lines of: ...