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Sep 17, 2019 at 19:21
On the value of tracking upstream open source projects:
Running GitHub on Rails 6.0
Running GitHub on Rails 6.0
On August 26, 2019, the GitHub application was deployed to production with 100% of traffic on the newest Rails version: 6.0. Read more about our process for upgrading, what we learned, and what’s next.

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Excellent series on Self, both the programming model and the tool chain. I love how opening an inspector on a value (e.g. nil) then shows a link to all occurrences of the value in other open inspectors!
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Date of birth pickers are a surprisingly nuanced UI problem. What do you pick as the initial value? How do you allow users to easily move by large amounts (years) as well as small amounts (the exact day)? Defaulting to today and even allowing future dates is funny though.
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I've been experimenting with different pagination UIs. It's so common to have arrows, but I've realised they're redundant here. When you have the adjacent values as well as the final value, you don't need > and >> arrows too. Thoughts?
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