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Extract a dplyr tbl column as a vector
...mes:
> mtcars %>% pull(5)
[1] 3.90 3.90 3.85 3.08 3.15 2.76 3.21 3.69 3.92 3.92 3.92 3.07 3.07 3.07 2.93 3.00 3.23 4.08 4.93 4.22 3.70 2.76 3.15 3.73 3.08 4.08 4.43
[28] 3.77 4.22 3.62 3.54 4.11
A nice way to do this in v0.2 of dplyr:
iris2 %>% select(Species) %>% collect %>% ....
jQuery - setting the selected value of a select control via its text description
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Note that jQuery 1.4 has now changed this behavior to select by value if the attribute has been specified, and only select by text if the v...
MySQL LIKE IN()?
...ed 3 char search: REGEXP: 16s, LIKE: 8.5s; 2 terms: REGEXP: 22.1s, LIKE: 9.69; '^(hemoglobin|hematr?ocrit).*' vs 3 term like: REGEXP: 36.3, LIKE: 9.59.
– Jesse Clark
Mar 11 '16 at 18:19
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LINQ to Entities does not recognize the method 'System.String ToString()' method, and this method ca
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JoshJosh
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How do I execute a program from Python? os.system fails due to spaces in path
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Here's a different way of doing it.
If you're using Windows the following acts like double-cli...
SQL Data Reader - handling Null column values
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If someone needs the column name rather than the index, you can do: int colIndex = reader.GetOrdinal(fieldname); and easily overload @marc_...
Removing duplicate rows in Notepad++
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It just removes ALL lines in a file in some cases.
– SerG
Feb 20 '14 at 13:56
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Difference between if () { } and if () : endif;
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I personally really hate the alternate syntax. One nice thing about the braces is that most IDE...
How to get back to most recent version in Git?
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Ana BettsAna Betts
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Is there an ExecutorService that uses the current thread?
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Here's a really simple Executor (not ExecutorService, mind you) implementation that only uses t...