Notable changes

ZIO

• Documentation improvements by @sidnt and @asakaev
• Deprecate sync extension method in favor of effect (#1606) by @markosski
• Change semantic of Fiber.joinAll – fail when joined fibers fail (#1620) by @neko-kai
• Add filterOrDie and filterOrDieMessage combinators (#1610) by @ioleo
• Correctly inherit fiber refs in ZIO.raceWith (#1594) by @mlangc
• Restore bracket on ZIO (#1694) by @regiskuckaertz
• Replicate ZIO.* methods to other companion objects (#1746) by @jakubjanecek
• Move PlatformLive.ExecutorUtil to Executor companion object (#1770) by @neko-kai

ZStream

• Add zipAllWith to Chunk (#1612) by @Vilkina
• Add ZStreamChunk#buffer, ZStream.mergeAllUnbounded, ZStream.flattenParUnbounded (#1657) by @iravid
• Adding ZStream#zipLeft and zipRight operators and operator alias for all ZStream#zip* functions (#1510) by @jadireddi
• Remove ZSink.Step in favor of abstract methods on Sink and update ZSink encoding (#1560) by @vasilmkd
• Update ZStream#aggregate and aggregateWithin to only extract once (#1672) by @iravid
• Add ZSink.foldWeightedDecompose/M and fix leftover handling in transduce (#1675) by @iravid
• Add StreamEffect specialized for chunks (#1669, #1740) by @vasilmkd and @sideeffffect
• Fixes and inference improvements to ZSink combinators (#1686) by @iravid
• Align ZStream#repeat with the other schedule combinators (#1533) by @mschuwalow
• Add ZStream.paginate (#1717) by @regiskuckaertz
• Add ZStream#unNone (#1713) by @asakaev
• Add ZStream#mapConcat overloads for iterables (#1735) by @kamilkloch
• Add ZStream.bimap and either (#1725) by @regiskuckaertz
• Add ZStream.fromIterator (#1731) by @sideeffffect
• Remove specialized annotations (#1738) by @regiskuckaertz
• Add additional fold variants to ZStream (#1756) by @kamilkloch
• Rename aggregateWithin to aggregateWithinEither and add a simpler aggregateWithin (#1700) by @saeltz
• Enhance ZStream#scheduleWith to not short-circuit the stream (#1767) by @regiskuckaertz

ZIO Test

• Make Timeout Strategies Test Aspects (#1555) by @adamgfraser
• Fix Gen#filter (#1580 #1591) by @adamgfraser
• Make testM and checkM Polymorphic In Error Type (#1596) by @adamgfraser
• Add Gen#suspend to support recursive generators (#1598) by @adamgfraser
• Improve Reporting of Property Based Testing Result (shows shrinked input) (#1617) by @ghostdogpr
• Support Generators for Functions (#1616) by @adamgfraser
• Report timeouts in a prettier way (#1602) by @ghostdogpr
• Add Size Combinators small, medium and large (#1625) by @adamgfraser
• Add Assertion.dies and Gen.anyString (#1638) by @regiskuckaertz
• Upgrade AssertResult to BoolAlgebra (#1582) by @adamgfraser
• Support Implications (#1662) by @adamgfraser
• Augment MockRandom with a Buffer to be able to control random output (#1679) by @adamgfraser
• Add Common Predicates (#1314) by @jaliss
• Implement Generators for Effects (#1670) by @adamgfraser

ZSchedule

• Add doUntilEquals and doWhileEquals methods (#1634) by @marekklis

ZManaged

• Add a synchronous effect construction (#1667) by @LukaszByczynski
• Add ZManaged#withEarlyRelease (#1722) by @adamgfraser

Same as v1.0.0-RC12, fixing the missing ZIO Test for Scala 2.12.

Notable changes

ZIO

• Deprecate const in favor of as and add asError in ZIO and all data types (#1315) by @ioleo
• Deprecate succeedLazy in favor of effectTotal (#1377) by @ioleo
• Add ZIO#cached (#1361) by @adamgfraser
• Ignore extra callback calls in ZIO#effectAsync (#1402) by @ghostdogpr
• Add ZIO#catchSomeCause (#1387) by @mschuwalow
• Add ZIO#collectAllSuccesses and variants (#1237) by @mtsokol
• Improve extension method support for ZIO (#1481 and #1444) by @NeQuissimus and @jeremyrsmith
• Add ZIO#provideM (#1522) by @adamgfraser

Stream

In this release, the internal representation of ZStream has been vastly simplified to an effectful, scoped iterator. This representation, besides being simpler to write combinators and constructors for, should result in improved performance and less GC pressure. Please report any issues you notice!

• Add ZSink#zipPar (#1344) by @simpadjo
• Add ZSink#collectAllN and variants for grouping elements into n-sized lists, sets, maps (#1362) by @PawelGizka
• Add ZStream#interleave, ZStream#interleaveWith and ZStream#combine for merging of streams (#1355) by @adamgfraser
• Add ZStreamChunk#collect (#1379) by @shankarshastri
• Add ZStream#broadcast, ZStream#groupBy, ZStream#partition, ZStream#timeout and other variants (#1387) by @mschuwalow
• Add ZStream#catchAll, ZStream#mapError, ZStream#provide and variants (#1427) by @iravid
• Refactor of ZStream internals by @iravid and @vasilmkd
• Add ZSink#splitLines (#1384) by @iravid
• Add ZStream#zipWithLatest, ZStream#fixed, ZStream#schedule and variants (#1482) by @regiskuckaertz

ZIO Test

• Support for sbt (#1335) by @dkarlinsky
• Add Gen combinators for property-based testing (#1356) by @adamgfraser
• Rename Assertion to AssertResult and Predicate to Assertion (#1500) by @adamgfraser
• Add combinators for composing assertions (#1438) by @adamgfraser

STM

• Add support for ScalaJS (#1338) by @heraklos
• Add TArray (#1191) by @LGLO

Cause

• Add Cause#untraced that removes all tracing information from a Cause (#1354) by @shankarshastri

Same as v1.0.0-RC11 + publishes missing ZIO Test for ScalaJS

ZIO Test

Early beta version of dependency-free test library for (pure FP) effectful programs. Critical constructs include:

• Spec - A value-level representation for a specification
• ZSpec - An alias for a Spec whose tests are ZIO effects
• Predicate - Composable predicates with detailed error messages
• zio.test.{ assert, assertM, check, checkAll, checkSome, suite, test, testM } - The building blocks for constructing specs
• RunnableSpec - Specs will extend this (or DefaultRunnableSpec)
• TestRunner - Every runnable spec points to a spec runner
• TestAspect - Features that can be added to specs, such as timeouts, retries, etc.
• Gen - Generators for property-testing based on ZIO Stream

ZIO Test has excellent support for environmental effects; specs that use the ZIO environmental effects (Console, Clock, etc.) will automatically (in DefaultRunnableSpec) be provided with a newly-created mock environment, meaning they will execute fast and deterministically. Users can supply their own mock environments when extending RunnableSpec.

ZIO Test Example:

class MySpec extends DefaultRunnableSpec {
  import Predicate._
  import zio.random._
  import zio.test.TestAspect.{ flaky, timeout }

  suite("An example suite") {
    test("addition") {
      assert(2 + 2, equals(4))
    },
    testM("random.nextDouble") { 
      assertM(nextDouble, isGreaterThanEqual(0.0) && isLessThanEqual(1.0)) 
    },
    (flaky >>> timeout(10.seconds)) {
      testM("flaky random.nextDouble") {
        assertM(nextDouble, isGreaterThan(0.5))
      }
    }
  }
}

Other notable changes

ZIO

• Enhance support for Option and Either (#1175) by @dorsev
• Add Random.shuffle method (#1185) by @ioleo
• Add real companion objects to Task, TaskR, UIO and IO (#805) by @TheMayoras
• Rename TaskR to RIO and add an alias UIOR[R, A] = ZIO[R, Nothing, A] (#1154) by @ioleo
• Fix #1165 - ZIO.foreachParN should not use more than n fibers (#1187) by @adamgfraser
• Implement ZIO#foldCause (#1243) by @vasilmkd
• Add whenCase and whenCaseM to ZIO and ZManaged (#1246) by @ghostdogpr
• Add "Setter" / "Update" Methods to Mock Services (#1252) by @adamgfraser
• Add ZIO.replicate method (#1262) by @dorsev
• Add ZIO#eventually (#1302) by @vasilmkd
• Add ZIO#left, ZIO#right and ZIO#head (#1223) by @adamgfraser
• Add ZIO#flattenErrorOption, ZIO#none, ZIO#optional, ZIO#some (#1221) by @jczuchnowski
• Add ZIO.effectSuspend, ZIO.effectSuspendTotal, ZIO.effectSuspendTotalWith and ZIO.effectSuspendWith (#926) by @kamilkloch

ZManaged

• Introduce real companion object for Managed (#1111) (#1169) by @andreamarcolin
• Add ZStream#ensuringFirst (#1209) by @adamgfraser
• Make ZManaged#mergeAllParN and ZManaged#reduceAllParN tolerant to finalizer defects (#1256) by @adamgfraser
• Add ZManaged.makeExit that allows to handle Exit by the finalizer. (#1232) by @vvlevykin

ZSchedule

• add doWhileM, doUntilM for ZSchedule (#1199) by @contrun
• add collectWhile and collectUntil (#1287) by @contrun

ZStream and ZSink

• Enhanced ZStream spaced to also emit schedule's output (#1120) (#1162) by @dag2ww
• Add ZStream#throttleEnforce and ZStream#throttleEnforceM (#1027) (#1155) by @vasilmkd
• Add ZStream#throttleShape, ZStream#throttleShapeM (#1195) by @vasilmkd
• Add ZStream#effectAsync and variants (#1118) by @dariusrobson
• Add ZStream#aggregate, ZStream#aggregateWithin (#1137) by @iravid
• Add burst control to the existing Stream throttling combinators (#1205) by @vasilmkd
• Add ZStream#flatMapParSwitch (#1222) by @vasilmkd
• Add sinks for decoding UTF-8 bytes and byte chunks (#1342) by @iravid

Promise

• Changed Promise#done to take an Exit (#1251) by @mtsokol

Semaphore

• Implement Semaphore#withPermitsManaged (#1293) by @vasilmkd

Re-release RC10 due to scaladoc failure

A new release of ZIO! Now available for Scala 2.13.0

PRs merged in this release:

• Release zio for scala 2.13 (#1104)
• Limit the maximum amount of ancestors in a ZIO Trace (#1158)
• Ensure that two chunks can be compared for equality and hash code #1159 (#1163)
• Bracket example to doc (#962)
• Introduce real companion object for Schedule - Fix #1111 (#1140)
• Move Queue specific methods to its own companion object (#1111) (#1142)
• clarify that callback must be called at most once for async effects (#1153)
• Introduce Stream companion object (#1111) (#1147)
• Introduce real companion object for Sink (#1144)
• Added zio-slick to the ecosystem page (#1152)
• Fix CI release failure "SCM URL missing" (#1145)

A new release of ZIO! Now available for Scala 2.13.0

PRs merged in this release:

• Release zio for scala 2.13 (#1104)
• Limit the maximum amount of ancestors in a ZIO Trace (#1158)
• Ensure that two chunks can be compared for equality and hash code #1159 (#1163)
• Bracket example to doc (#962)
• Introduce real companion object for Schedule - Fix #1111 (#1140)
• Move Queue specific methods to its own companion object (#1111) (#1142)
• clarify that callback must be called at most once for async effects (#1153)
• Introduce Stream companion object (#1111) (#1147)
• Introduce real companion object for Sink (#1144)
• Added zio-slick to the ecosystem page (#1152)
• Fix CI release failure "SCM URL missing" (#1145)

retry release with build.sbt fix

• Alias foreach to traverse and collectAll to sequence (#1121)
• Attach unsafeRun location to the stack trace (#1003)

Releasing due to bincompat changes in #1133 that need interops to be updated.