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How to detect READ_COMMITTED_SNAPSHOT is enabled?
In MS SQL Server is there a way to detect whether a database has had its isolation level set via the T-SQL command ALTER DATABASE <database> SET READ_COMMITTED_SNAPSHOT ON;
...
What is the purpose of the single underscore “_” variable in Python?
..., I'm one of the co-authors of more recent PEP 8 updates, and my answer is based on the 3 different ways I've seen _ used as a variable name since I started using Python professionally in 2002.
– ncoghlan
Jun 28 '15 at 3:54
...
How to plot multiple functions on the same figure, in Matplotlib?
... as: plt.plot(t, a, 'b', t, b, 'g', t, c, 'y'). You can specify the colors based on the colors given in this link: matplotlib.org/users/colors.html
– Jash Shah
Oct 20 '17 at 8:50
...
How does having a dynamic variable affect performance?
...chmark numbers
*Update 3: Added IL-Emitted and Lazy IL-Emitted benchmarks, based on Mark Gravell's answer to this question.
To my knowledge, use of the dynamic keyword does not cause any extra compilation at runtime in and of itself (though I imagine it could do so under specific circumstances, depe...
Why is this F# code so slow?
...parison". inline works like a C++ template, which would specialize to int based on the call site.
– Brian
May 24 '11 at 0:08
13
...
How to automatically install Emacs packages by specifying a list of package names?
...
Based on comments by Profpatsch and answers below:
(defun ensure-package-installed (&rest packages)
"Assure every package is installed, ask for installation if it’s not.
Return a list of installed packages or nil fo...
Automatic Retina images for web sites
...sted by Paul Boag.
Adaptive Images, a (mostly) server side solution. It is based on a cookie storing the screen resolution, a web server configured to serve images from a PHP script, and named script to read the cookie and serve the appropriate image.
A bunch of possibilities well described and disc...
Using python's eval() vs. ast.literal_eval()?
...ow
s = """
(lambda fc=(
lambda n: [
c for c in
().__class__.__bases__[0].__subclasses__()
if c.__name__ == n
][0]
):
fc("function")(
fc("code")(
0,0,0,0,"KABOOM",(),(),(),"","",0,""
),{}
)()
)()
"""
eval(s, {'__builtins__':{}})
In the above code ().__class...
How do I get a value of datetime.today() in Python that is “timezone aware”?
...rather suggest to use the pytz library, which has a constantly updated database of most timezones.
Working with local timezones can be very tricky (see "Further reading" links below), so you may rather want to use UTC throughout your application, especially for arithmetic operations like calculatin...
What is N-Tier architecture?
...that uses
middleware to service data requests
between a user and a database employs
multi-tier architecture. The most
widespread use of "multi-tier
architecture" refers to three-tier
architecture.
It's debatable what counts as "tiers," but in my opinion it needs to at least cross the p...