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Number of processors/cores in command line
...os x.
– Alec Jacobson
Jul 30 '15 at 20:08
Unfortunately, while this utility is available on Solaris, _NPROCESSORS_ONLN...
How to make Entity Framework Data Context Readonly
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answered May 3 '12 at 20:38
bricelambricelam
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How do I flush the PRINT buffer in TSQL?
I have a very long-running stored procedure in SQL Server 2005 that I'm trying to debug, and I'm using the 'print' command to do it. The problem is, I'm only getting the messages back from SQL Server at the very end of my sproc - I'd like to be able to flush the message buffer and see these messages...
How to sort a dataFrame in python pandas by two or more columns?
... deprecated in favor of sort_values. sort was completely removed in the 0.20.0 release. The arguments (and results) remain the same:
df.sort_values(['a', 'b'], ascending=[True, False])
You can use the ascending argument of sort:
df.sort(['a', 'b'], ascending=[True, False])
For example:
In ...
How to format a floating number to fixed width in Python
...4f}".format(x)
prints
23.2300
0.1233
1.0000
4.2230
9887.2000
The format specifier inside the curly braces follows the Python format string syntax. Specifically, in this case, it consists of the following parts:
The empty string before the colon means "take the next provided ar...
WHERE vs HAVING
...dent_id,(YEAR(CurDate())-YEAR(birthday)) AS Age FROM Student HAVING Age>20;
/*this will not work if we use ‘where’ here, ‘where’ don’t know about age as age is defined in select part.*/
share
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How to map and remove nil values in Ruby
... 2, 5, 8, 10, 13]
enum.filter_map { |i| i * 2 if i.even? }
# => [4, 16, 20]
In your case, as the block evaluates to falsey, simply:
items.filter_map { |x| process_x url }
"Ruby 2.7 adds Enumerable#filter_map" is a good read on the subject, with some performance benchmarks against some of the...
Is it possible to use Swift's Enum in Obj-C?
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edited Nov 20 '19 at 9:09
answered Feb 10 '15 at 16:02
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What's the difference between text/xml vs application/xml for webservice response
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OdedOded
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7
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Read an Excel file directly from a R script
... BenBen
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3
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