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Easy interview question got harder: given numbers 1..100, find the missing number(s) given exactly k
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R - Concatenate two dataframes?
...ine adds column b to data frame b.
Results
> a <- data.frame(a=c(0,1,2), b=c(3,4,5), c=c(6,7,8))
> a
a b c
1 0 3 6
2 1 4 7
3 2 5 8
> b <- data.frame(a=c(9,10,11), c=c(12,13,14))
> b
a c
1 9 12
2 10 13
3 11 14
> b$b <- NA
> b
a c b
1 9 12 NA
2 10 13 NA
3 11 1...
“Too many values to unpack” Exception
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That exception means that you are trying to unpack a tuple, but the tuple has too many values ...
Django - what is the difference between render(), render_to_response() and direct_to_template()?
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https://docs.djangoproject.com/en/1.8/topics/http/shortcuts/#render
render(request, template[...
How to identify server IP address in PHP
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bool operator ++ and --
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It comes from the history of using integer values as booleans.
If x is an int, but I am using it...
Using python's eval() vs. ast.literal_eval()?
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datamap = eval(raw_input('Provide some data here: ')) means that you actually evaluate the cod...
python assert with and without parenthesis
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The last assert would have given you a warning (SyntaxWarning: assertion is always true, perha...
Is there a JavaScript function that can pad a string to get to a determined length?
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Turn Pandas Multi-Index into column
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The reset_index() is a pandas DataFrame method that will transfer index values into the DataFr...