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Transform DateTime into simple Date in Ruby on Rails
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167
DateTime#to_date does exist with ActiveSupport:
$ irb
>> DateTime.new.to_date
NoMethodE...
deleting rows in numpy array
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157
The simplest way to delete rows and columns from arrays is the numpy.delete method.
Suppose I...
Calculating Pearson correlation and significance in Python
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16 Answers
16
Active
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How to install a specific version of a ruby gem?
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1182
Use the -v flag:
$ gem install fog -v 1.8
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Homebrew install specific version of formula?
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2611
TLDR: brew install postgresql@8.4.4 See answer below for more details.
*(I’ve re-edited my...
How can I make pandas dataframe column headers all lowercase?
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180
You can do it like this:
data.columns = map(str.lower, data.columns)
or
data.columns = [x....
How do I find if a string starts with another string in Ruby?
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edited Jan 11 '13 at 23:53
the Tin Man
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Convert list of dictionaries to a pandas DataFrame
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1044
Supposing d is your list of dicts, simply:
df = pd.DataFrame(d)
Note: this does not work wit...