December 2018
Beginner to intermediate
500 pages
12h 10m
English
Content preview from Julia Programming Projects
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Working with Feather files
Feather is a binary file format that was specially designed for storing data frames. It is fast, lightweight, and language-agnostic. The project was initially started in order to make it possible to exchange data frames between R and Python. Soon, other languages added support for it, including Julia.
Support for Feather files does not come out of the box, but is made available through the homonymous package. Let's go ahead and add it and then bring it into scope:
pkg> add Feather
julia> using Feather
Now, saving our DataFrame is just a matter of calling Feather.write:
julia> Feather.write("test_data.feather", test_data)
Next, let's try the reverse operation and load back our Feather file. We'll use the counterpart ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.