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Using Rails 3.1 assets pipeline to conditionally use certain css
I’m in the process of 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,...
Performance of foreach, array_map with lambda and array_map with static function
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How can I add items to an empty set in python
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Bootstrap carousel multiple frames at once
This is the effect I'm trying to achieve with Bootstrap 3 carousel
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How to re-raise an exception in nested try/except blocks?
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132
As of Python 3 the traceback is stored in the exception, so a simple raise e will do the (mostl...
Find and replace string values in list
... a float/integer?
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Dec 31 '18 at 20:38
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How to match all occurrences of a regex
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834
Using scan should do the trick:
string.scan(/regex/)
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How to produce a range with step n in bash? (generate a sequence of numbers with increments)
...n its own).
Note that seq allows floating-point numbers (e.g., seq .5 .25 3.5) but bash's brace expansion only allows integers.
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Why can't R's ifelse statements return vectors?
...tors, you will get longer results:
> ifelse(c(TRUE, FALSE), c(1, 2), c(3, 4))
[1] 1 4
So ifelse is intended for the specific purpose of testing a vector of booleans and returning a vector of the same length, filled with elements taken from the (vector) yes and no arguments.
It is a common con...