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Better techniques for trimming leading zeros in SQL Server?
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SUBSTRING(str_col, PATINDEX('%[^0]%', str_col+'.'), LEN(str_col))
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Which is faster in Python: x**.5 or math.sqrt(x)?
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math.sqrt(x) is significantly faster than x**0.5.
import math
N = 1000000
%%timeit
for i in range(N):
z=i**.5
10 loops, best of 3: 156 ms per loop
%%timeit
for i in range(N):
z=math.sqrt(i)
10 loops, best of 3: 91.1 ms per loop
Using Python 3.6....
How do you attach and detach from Docker's process?
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Josh Correia
1,70711 gold badge1111 silver badges2222 bronze badges
answered Oct 30 '13 at 16:52
Ken CochraneKen Coch...
Cost of exception handlers in Python
...e just tried the following:
import timeit
statements=["""\
try:
b = 10/a
except ZeroDivisionError:
pass""",
"""\
if a:
b = 10/a""",
"b = 10/a"]
for a in (1,0):
for s in statements:
t = timeit.Timer(stmt=s, setup='a={}'.format(a))
print("a = {}\n{}".format(a,s))
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What's the use of do while(0) when we define a macro? [duplicate]
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140
You can follow it with a semicolon and make it look and act more like a function.
It also works ...
What do the numbers in a version typically represent (i.e. v1.9.0.1)?
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200
In version 1.9.0.1:
1: Major revision (new UI, lots of new features, conceptual change, etc.)...
How to identify numpy types in python?
... numpy enough type?
– panda-34
Mar 10 '16 at 13:02
If you want anything in numpy.* you just walk the parent package of...
C# how to create a Guid value?
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answered Feb 26 '10 at 19:02
DavidDavid
10.6k11 gold badge1919 silver badges1717 bronze badges
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How do I combine a background-image and CSS3 gradient on the same element?
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1580
Multiple backgrounds!
body {
background: #eb01a5;
background-image: url("IMAGE_URL");...
How to write a cron that will run a script every day at midnight?
...how to use it on Ubuntu. Your crontab line will look something like this:
00 00 * * * ruby path/to/your/script.rb
(00 00 indicates midnight--0 minutes and 0 hours--and the *s mean every day of every month.)
Syntax:
mm hh dd mt wd command
mm minute 0-59
hh hour 0-23
dd day of month 1-...