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Convert Year/Month/Day to Day of Year in Python
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261
There is a very simple solution:
from datetime import datetime
day_of_year = datetime.now().tim...
How to return a part of an array in Ruby?
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195
Yes, Ruby has very similar array-slicing syntax to Python. Here is the ri documentation for th...
Why is 1/1/1970 the “epoch time”?
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Early versions of unix measured system time in 1/60 s intervals. This meant that a 32-bit unsigned integer could only represent a span of time less than 829 days. For this reason, the time represented by the number 0 (called the epoch) had to be set in the very recent pas...
How does the C code that prints from 1 to 1000 without loops or conditional statements work?
I've found C code that prints from 1 to 1000 without loops or conditionals :
But I don't understand how it works. Can anyone go through the code and explain each line?
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pandas: filter rows of DataFrame with operator chaining
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14 Answers
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Printing everything except the first field with awk
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16 Answers
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How to drop columns by name in a data frame
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11 Answers
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How can I get the intersection, union, and subset of arrays in Ruby?
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155
Utilizing the fact that you can do set operations on arrays by doing &(intersection), -(di...
Is SQL or even TSQL Turing Complete?
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edited Nov 11 '13 at 4:45
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