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Why do we use __init__ in Python classes?
...re attributes that make sense on classes. For instance, population_size is one such - it doesn't make sense to count the Fido because Fido is always one. It does make sense to count dogs. Let us say there're 200 million dogs in the world. It's the property of the Dog class. Fido has nothing to do wi...
How to plot two histograms together in R?
...maybe the only thing you're missing is combining your two data frames into one long one.
So, let's start with something like what you have, two separate sets of data and combine them.
carrots <- data.frame(length = rnorm(100000, 6, 2))
cukes <- data.frame(length = rnorm(50000, 7, 2.5))
# No...
jQuery callback for multiple ajax calls
... is needed for a final callback. The calls themselves are not dependent on one another, they can all go at the same time, however I would like to have a final callback when all three are complete.
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C/C++ include header file order
...should include files be specified, i.e. what are the reasons for including one header before another?
10 Answers
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Storing time-series data, relational or non?
...g 1,000 rows from a 16 billion row table is instantaneous).
Your table has one serious impediment. Given your description, the actual PK is (Device, Metric, DateTime). (Please don't call it TimeStamp, that means something else, but that is a minor issue.) The uniqueness of the row is identified b...
Can iterators be reset in Python?
...
I see many answers suggesting itertools.tee, but that's ignoring one crucial warning in the docs for it:
This itertool may require significant
auxiliary storage (depending on how
much temporary data needs to be
stored). In general, if one iterator
uses most or all of the data b...
How to find/identify large commits in git history?
...`echo -e "\n"`
output="${output}\n${size},${compressedSize},${other}"
done
echo -e $output | column -t -s ', '
That will give you the object name (SHA1sum) of the blob, and then you can use a script like this one:
Which commit has this blob?
... to find the commit that points to each of...
Convert Python dict into a dataframe
... value 2 value 3
It's saved me some headaches so I hope it helps someone out there!
EDIT: In the pandas docs one option for the data parameter in the DataFrame constructor is a list of dictionaries. Here we're passing a list with one dictionary in it.
...
What Makes a Good Unit Test? [closed]
... in Java with JUnit (There's a version with C#-Nunit too.. but I have this one.. its agnostic for the most part. Recommended.)
Good Tests should be A TRIP (The acronymn isn't sticky enough - I have a printout of the cheatsheet in the book that I had to pull out to make sure I got this right..)
Au...
uint8_t vs unsigned char
...imply a character, whereas in the context of a UTF8 string, it may be just one byte of a multibyte character. Using uint8_t could make it clear that one shouldn't expect a character at every position -- in other words that each element of the string/array is an arbitrary integer that one shouldn't m...