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How to learn R as a programming language [closed]
... the most about how to program with R had nothing to do with statistics at all.
Knowing functions like parse() and eval() is by no means a measure for being "a good R programmer". Applications that require heavy use of these functions do not make up a majority of the problem space in which you can ...
How do I rotate the Android emulator display? [duplicate]
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Fn + Ctrl + F12, I really don't get why this get so many votes
– ericn
Apr 15 '13 at 1:10
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Python pandas: fill a dataframe row by row
...you want to align the input (for example you then don't have to to specify all of the elements)
In [7]: df = pandas.DataFrame(columns=['a','b','c','d'], index=['x','y','z'])
In [8]: df.loc['y'] = pandas.Series({'a':1, 'b':5, 'c':2, 'd':3})
In [9]: df
Out[9]:
a b c d
x NaN NaN Na...
Where to find extensions installed folder for Google Chrome on Mac?
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You can find all Chrome extensions in below location.
/Users/{mac_user}/Library/Application Support/Google/Chrome/Default/Extensions
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Remove scrollbar from iframe
...t work because the overflow happens in the iframe document, which you generally won't be able to modify because of cross-domain iframe security restrictions.
– thdoan
Apr 17 '15 at 11:09
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Find lines from a file which are not present in another file [duplicate]
...le1 file2
Note that if file2 contains duplicate lines that don't exist at all in file1, fgrep will output each of the duplicate lines. Also note that my totally non-scientific tests on a single laptop for a single (fairly large) dataset showed Solution 1 (using comm) to be almost 5 times faster tha...
Many-to-many relationship with the same model in rails?
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For reference: the Rails documentation on the subject. There's a section called “Many-to-many”, and of course the documentation on the class methods themselves.
Simplest scenario, uni-directional, no additional fields
This is the most compact in code.
I'll start out with this basic schema fo...
Piping command output to tee but also save exit code of command [duplicate]
I have a shell script in which I wrap a command (mvn clean install), to redirect the output to a logfile.
4 Answers
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Cannot instantiate the type List [duplicate]
...wered Oct 31 '11 at 21:49
Matt BallMatt Ball
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How to select the last record of a table in SQL?
This is a sample code to select all records from a table. Can someone show me how to select the last record of that table?
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