scala

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scopt 3.0

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scopt is a little command line options parsing library.

Today, I'm releasing scopt 3.0. If you're not interested in the implementation details, skip to the readme.

Around March 4th, 2010, I became a committer to scopt, a fork of Aaron Harnly's scala-options that was written in 2008. I think I wanted to make a few changes around the usage text, key=value options, and argument list. Since then I've been fielding all the bug reports, including the request to publish the jar on scala-tools.org. On March 18, 2012, I forked the project again to scopt/scopt and released scopt 2.0.0 that added immutable parser.

After years of adding features on top of the other, I decided to rewrite scopt3 from scratch. The tipping point was Leif Wickland asking if there's a "philosophical reason that scopt doesn't have an intArg().".

how to write a Dispatch plugin

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Dispatch has been the de facto library to get to the Internet from Scala. To keep in step with the recent move towards non-blocking IO, @n8han rewrote the library as Reboot based on Async Http Client. This became Dispatch 0.9. Then Dispatch 0.10 came out to replace its own Promise type with the standarized SIP-14 Future.

As with Dispatch Classic, Reboot lets you write plugins to wrap around web APIs. In this post we'll port a plugin from Classic to explore how it works.

working on your own twitter bot?

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