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Generating a UUID in Postgres for Insert statement?
...t load it into your database to use it.
For modern PostgreSQL versions (9.1 and newer) that's easy:
CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
but for 9.0 and below you must instead run the SQL script to load the extension. See the documentation for contrib modules in 8.4.
For Pg 9.1 and newe...
Extract a dplyr tbl column as a vector
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188
With dplyr 0.7.0, you can use pull to get a vector from a tbl.
library("dplyr")
#>
#&g...
Why can't a 'continue' statement be inside a 'finally' block?
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How to extract numbers from a string in Python?
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Detect if a NumPy array contains at least one non-numeric value?
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187
This should be faster than iterating and will work regardless of shape.
numpy.isnan(myarray)....
How to avoid explicit 'self' in Python?
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try {} without catch {} possible in JavaScript?
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Does Python have a ternary conditional operator?
...ession:
>>> pass if False else x = 3
File "<stdin>", line 1
pass if False else x = 3
^
SyntaxError: invalid syntax
You can, however, use conditional expressions to assign a variable like so:
x = a if True else b
Think of the conditional expression as switching betwee...