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How to sum all column values in multi-dimensional array?
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Chris JChris J
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Django datetime issues (default=datetime.now())
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618
it looks like datetime.now() is being evaluated when the model is defined, and not each time yo...
What's the difference between jquery.js and jquery.min.js?
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11 Answers
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Combine two or more columns in a dataframe into a new column with a new name
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132
Use paste.
df$x <- paste(df$n,df$s)
df
# n s b x
# 1 2 aa TRUE 2 aa
# 2 3 bb...
Add a “hook” to all AJAX requests on a page
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111
Inspired by aviv's answer, I did a little investigating and this is what I came up with.
I'm n...
RSpec vs Cucumber (RSpec stories) [closed]
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114
If you haven't already, you might want to check out Dan North's excellent article, What's in a...
How can I center an absolutely positioned element in a div?
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