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Insert text with single quotes in PostgreSQL
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String literals
Escaping single quotes ' by doubling them up -> '' is the standard way and works of course:
'user's log' -- incorrect syntax (unbalanced quote)
'user''s log'
In old versions or if you still run with standard_conforming_strings = off or, gene...
Delete from the current cursor position to a given line number in vi editor
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:a,bd
from current to b use
:,bd
(where a and b in code are replaced by your numbers)
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pass **kwargs argument to another function with **kwargs
... (kwargs). But Python expects: 2 formal arguments plus keyword arguments.
By prefixing the dictionary by '**' you unpack the dictionary kwargs to keywords arguments.
A dictionary (type dict) is a single variable containing key-value pairs.
"Keyword arguments" are key-value method-parameters.
Any...
How to abort an interactive rebase if --abort doesn't work?
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Nodejs send file in response
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Here's an example program that will send myfile.mp3 by streaming it from disk (that is, it doesn't read the whole file into memory before sending the file). The server listens on port 2000.
[Update] As mentioned by @Aftershock in the comments, util.pump is gone and was replac...
EditText, inputType values (xml)
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Why do Objective-C files use the .m extension?
...ture of Objective-C [...]"
(from the book "Learn Objective-C on the Mac" by Mark Dalrymple and Scott Knaster, page 9)
EDIT: To satisfy an itch I emailed Brad Cox, the inventor of Objective-C, about the question and he answered with this single line:
"Because .o and .c were taken. Simple
as...
Find difference between timestamps in seconds in PostgreSQL
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@Clodoaldo: I need the output as mentioned by Igor. I need the full difference in seconds.
– Arun
Dec 26 '12 at 10:33
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what is the most efficient way of counting occurrences in pandas?
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I think df['word'].value_counts() should serve. By skipping the groupby machinery, you'll save some time. I'm not sure why count should be much slower than max. Both take some time to avoid missing values. (Compare with size.)
In any case, value_counts has been specifical...
TypeError: Cannot read property 'then' of undefined
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