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Relative frequencies / proportions with dplyr
...m(n))
# am gear n freq
# 1 0 3 15 0.7894737
# 2 0 4 4 0.2105263
# 3 1 4 8 0.6153846
# 4 1 5 5 0.3846154
From the dplyr vignette:
When you group by multiple variables, each summary peels off one level of the grouping. That makes it easy to progressively roll-up a dat...
How to remove a key from a Python dictionary?
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Sven MarnachSven Marnach
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Generate random 5 characters string
...h using md5() however is that you get a string made of a 16-character set (10 digits and a to f, i.e. 4 bits per string character). This may be enough for some purposes but may be too little for cryptographical purposes (five characters out of 16 symbols = 16^5 = 20 bits = 1048576 possibilities).
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How do I convert an integer to string as part of a PostgreSQL query?
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answered Dec 10 '12 at 21:32
Bohemian♦Bohemian
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How can I run dos2unix on an entire directory? [closed]
...od. Thank you for that!
– freeo
Oct 10 '14 at 16:29
Wow - just saved me a lot of problem solving time while attempting...
How do I use Assert to verify that an exception has been thrown?
...se)
– Ruben Bartelink
Jun 25 '09 at 10:48
29
This attribute gets the job done and is a built-in f...
jquery disable form submit on enter
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10
Important! This solution block breaks in textarea.
– German Khokhlov
Sep 27 '16 at 13:49
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Casting to string in JavaScript
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edited May 23 '17 at 12:10
Community♦
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answered Jun 18 '12 at 12:58
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How to secure MongoDB with username and password
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edited Feb 10 '17 at 18:57
Prashant Pokhriyal
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