Functional Roundup for September 2, 2016

by Maureen Elsberry
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September 02, 2016
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scalajs• monix• scalacheck• functional roundup
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3 minutes to read.

Scala.js 0.6.12 released

Although a minor release, 0.6.12 fixes a handful of bugs and is prepping the way with a few internal changes for support of Scala 2.12.0-RC1.

The following were amoung the bugs fixed:

2547 - Overriding a JS native method with default parameters leads to AssertionError in the compiler.
2553 - Constructing a String from a large byte array throws “Maximum call stack size exceeded.”
2559 - Throwable constructor with cause should use the cause’s message.
2565 - java.util.Date.toString() result is missing dd part.
2573 - split("") is not identical to JVM split.

You can view the rest of the changes here: Scala.js 0.6.12 bug fixes.

Monix 2.0.0 final release

Monix is a Scala/Scala.js library for composing asynchronous, event-based programs.

According to the release announcement, there have been a massive amount of fixes and enhancements since Monix 1.0.0 was released, here are just a few:

Enhancements:

176 - Add TaskApp, a safe App trait for both the JVM and Scala.js.
191 - Introduce implicit convertion from Any to Coeval.Now.
196 - Add the Consumer.create builder.
209 - Task: add a way to override the Scheduler used.

Bug Fixes:

201 - Fixes and optimizes Task.gatherUnordered as an edge-case, it wassn’t stack safe and it has been optimized to be more efficient.
207 - Task flatMap loop isn’t cancelable.
210 - fixed CompositeCancelable.remove.
213 - Fixes Task / Coeval memoize operation.

You can view the rest of the changes here: Monix 2.0.0 final release.

ScalaCheck-DateTime Released

ScalaCheck-DateTime is a new open source library from 47 Degrees and Noel Markham designed to make it easy to have sensibly generate date and time instances for use with the ScalaCheck library.

Works for both Joda Time and Java 8’s java.time APIs.
Generate date time instances within a given range
Generate date time instances to a given precision

The project is currently open for testing and contributions before heading into a 1.0 release.

Visit the documentation here:ScalaCheck-DateTime

Wait, there’s more:

Suggested information to digest this weekend:

The functional programming community has no shortage of excellent conferences, talks, and articles. Here are just a few that were released that we recommend checking out if you missed them the first time:

Bodil Stokke: