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Using Rails 3.1 assets pipeline to conditionally use certain css
...building my first solo Rails app using Rails 3.1.rc5. My problem is that I want to have my site render the various CSS files conditionally. I’m using Blueprint CSS and I’m trying to have sprockets/rails render screen.css most of the time, print.css only when printing, and ie.css only when ...
How do I uninstall a package installed using npm link?
When installing a node package using sudo npm link in the package's directory, how can I uninstall the package once I'm done with development?
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Builder Pattern in Effective Java
I have recently started to read Effective Java by Joshua Bloch. I found the idea of the Builder pattern [Item 2 in the book] really interesting. I tried to implement it in my project but there were compilation errors. Following is in essence what I was trying to do:
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What are the differences between Rust's `String` and `str`?
Why does Rust have String and str ? What are the differences between String and str ? When does one use String instead of str and vice versa? Is one of them getting deprecated?
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Generate a random letter in Python
... there a way to generate random letters in Python (like random.randint but for letters)? The range functionality of random.randint would be nice but having a generator that just outputs a random letter would be better than nothing.
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How to sort a dataframe by multiple column(s)
I want to sort a data.frame by multiple columns. For example, with the data.frame below I would like to sort by column z (descending) then by column b (ascending):
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Table header to stay fixed at the top when user scrolls it out of view with jQuery
I am trying to design an HTML table where the header will stay at the top of the page when AND ONLY when the user scrolls it out of view. For example, the table may be 500 pixels down from the page, how do I make it so that if the user scrolls the header out of view (browser detects its no longer i...
Parse config files, environment, and command-line arguments, to get a single collection of options
...ading ( os.environ ), and command-line argument parsing ( argparse ). I want to write a program that does all those, and also:
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How to view corresponding SQL query of the Django ORM's queryset?
... QuerySet object has a query attribute that you can log or print to stdout for debugging purposes.
qs = Model.objects.filter(name='test')
print qs.query
Edit
I've also used custom template tags (as outlined in this snippet) to inject the queries in the scope of a single request as HTML comment...
Catch a thread's exception in the caller thread in Python
...hreaded programming in general. Basically, I have a script that will copy files to another location. I would like this to be placed in another thread so I can output .... to indicate that the script is still running.
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