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Warning message: In `…` : invalid factor level, NA generated
... "Type" to be a character.
> fixed <- data.frame("Type" = character(3), "Amount" = numeric(3))
> str(fixed)
'data.frame': 3 obs. of 2 variables:
$ Type : Factor w/ 1 level "": NA 1 1
$ Amount: chr "100" "0" "0"
>
> fixed <- data.frame("Type" = character(3), "Amount" = nume...
Javascript - sort array based on another array
... georggeorg
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How do I find out which computer is the domain controller in Windows programmatically?
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MZywitzaMZywitza
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Diff two tabs in Vim
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edited Dec 28 '12 at 21:30
Aaron Thoma
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answered Jul 8 '09 at...
Why can't I use switch statement on a String?
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Switch statements with String cases have been implemented in Java SE 7, at least 16 years after ...
Remove characters except digits from string using Python?
...y far the fastest approach is the .translate method:
>>> x='aaa12333bb445bb54b5b52'
>>> import string
>>> all=string.maketrans('','')
>>> nodigs=all.translate(all, string.digits)
>>> x.translate(all, nodigs)
'1233344554552'
>>>
string.maketra...
Does Flask support regular expressions in its URL routing?
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Recommendations of Python REST (web services) framework? [closed]
...chMartin Blech
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