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How to create duplicate allowed attributes
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NameError: global name 'unicode' is not defined - in Python 3
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Run a callback only if an attribute has changed in Rails
...id_changed?
private
def do_something
# ...
end
end
This utilizes the fact that the before_save callback can conditionally execute based on the return value of a method call. The status_id_changed? method comes from ActiveModel::Dirty, which allows us to check if a specific attribute ha...
Private vs Public in Cache-Control
...swered Aug 16 '10 at 10:51
salgizasalgiza
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Rails 3: I want to list all paths defined in my rails application
...ouse9
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Python memory usage of numpy arrays
...arge files and I'm running into memory issues, so I've been using sys.getsizeof() to try and keep track of the usage, but it's behaviour with numpy arrays is bizarre. Here's an example involving a map of albedos that I'm having to open:
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lock(new object()) — Cargo cult or some crazy “language special case”?
I'm reviewing some code written by a consultant, and while dozens of red flags have already popped up, I can't wrap my head around the following snippet:
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How does “304 Not Modified” work exactly?
...61591
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answered Jan 7 '14 at 17:41
SLaksSLaks
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How can I convert a file pointer ( FILE* fp ) to a file descriptor (int fd)?
...on II
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answered Jul 2 '10 at 16:02
Phil MillerPhil Miller
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How do I strip non alphanumeric characters from a string and keep spaces?
...o the negated character group:
@search_query = @search_query.gsub(/[^0-9a-z ]/i, '')
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