大约有 43,410 项符合查询结果（耗时：0.0315秒） [XML]
Pairs from single list
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52
My favorite way to do it:
from itertools import izip
def pairwise(t):
it = iter(t)
ret...
What is the most efficient/elegant way to parse a flat table into a tree?
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462
Now that MySQL 8.0 supports recursive queries, we can say that all popular SQL databases support...
Testing whether a value is odd or even
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22 Answers
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Python Dictionary Comprehension
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528
There are dictionary comprehensions in Python 2.7+, but they don't work quite the way you're tr...
How can I match a string with a regex in Bash?
...ite a bash script that contains a function so when given a .tar , .tar.bz2 , .tar.gz etc. file it uses tar with the relevant switches to decompress the file.
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Fast permutation -> number -> permutation mapping algorithms
I have n elements. For the sake of an example, let's say, 7 elements, 1234567. I know there are 7! = 5040 permutations possible of these 7 elements.
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How do I use .toLocaleTimeString() without displaying seconds?
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325
You can always set the options, based on this page you can set, to get rid of the seconds, some...
How to run cron job every 2 hours
...n I write a Crontab that will run my /home/username/test.sh script every 2 hours?
5 Answers
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Convert dd-mm-yyyy string to date
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329
Split on "-"
Parse the string into the parts you need:
var from = $("#datepicker").val().spli...
Haversine Formula in Python (Bearing and Distance between two GPS points)
I would like to know how to get the distance and bearing between 2 GPS points .
I have researched on the haversine formula.
Someone told me that I could also find the bearing using the same data.
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