Feather: A Fast On-Disk Format for Data Frames for R and Python, powered by Apache Arrow

使ってみよう。

RStudio Blog

Wes McKinney, Software Engineer, Cloudera
Hadley Wickham, Chief Scientist, RStudio

This past January, we (Hadley and Wes) met and discussed some of the systems challenges facing the Python and R open source communities. In particular, we wanted to see if there were some opportunities to collaborate on tools for improving interoperability between Python, R, and external compute and storage systems.

One thing that struck us was that while R’s data frames and Python’s pandas data frames utilize very different internal memory representations, they share a very similar semantic model. In both R and Panda’s, data frames are lists of named, equal-length columns, which can be numeric, boolean, and date-and-time, categorical (factors), or string. Every column can have missing values.

Around this time, the open source community had just started the new Apache Arrow project, designed to improve data interoperability for systems dealing with columnar tabular data.

In discussing…

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Coming Soon: New .Blog Domains for Websites

WordPress.comの有料プランに組み入れて欲しいですね 🙂

The WordPress.com Blog

For more than a decade, the word “blog” has been synonymous with “your home on the web.” And since 2005, WordPress.com has been proud to help you create a unique space that is all yours.

Now we’re excited to announce a brand new way to create a unique identity for your website: .blog, a top-level domain extension that will let you create a customized name and web address for your site.

A name that’s all yours

Just like .com before it, .blog is clear and accessible, and it creates millions of fresh, new options for naming your blog. It’s the perfect place to build your home on the web.

The .blog domains are coming this year — sign up here to get notified when they become available. We’ll be offering them to all websites — you won’t need to have a WordPress or WordPress.com site to purchase one.

Why .blog?

For years, .com was the…

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