0.1.2 series announcement #2627
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| title: Announcing Dotty 0.1.2-RC1, a major step towards Scala 3 | ||
| author: Dmytro Petrashko | ||
| authorImg: /images/petrashko.jpg | ||
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| Today, we excited to release Dotty version 0.1.2-RC1. This release | ||
| serves as a technology preview that demonstrates new language features | ||
| and the compiler supporting them. | ||
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| <!--more--> | ||
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| ## Why is this important? | ||
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| _Dotty_ is the project name for a language and compiler that | ||
| is slated to become Scala 3.0. This is an ongoing development, | ||
| developed transparently as open source software. The Dotty project | ||
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There was a problem hiding this comment. transparently developed (also avoids the immediate repetition of "development" followed by "developed") |
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| started more than 4 years ago. It reached a major milestone in 2015 by | ||
| achieving | ||
| [bootstrap](http://dotty.epfl.ch/blog/2015/10/23/dotty-compiler-bootstraps.html), | ||
| that is, showing that the new compiler could compile itself. Today we | ||
| have reached another milestone with this first release of the | ||
| codebase. Developments will not stop here, but they will in the future | ||
| all be part of regular time-based releases. | ||
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| ## How can you try it out? | ||
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| You have several alternatives: use the `sbt-dotty` plugin, get a standalone | ||
| installation, or try it online on [Scastie]. | ||
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| ### sbt | ||
| Using sbt 0.13.13 or newer, do: | ||
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| ``` | ||
| sbt new lampepfl/dotty.g8 | ||
| ``` | ||
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| This will setup a new sbt project with Dotty as compiler. For more details on | ||
| using Dotty with sbt, see the | ||
| [example project](https://github.com/lampepfl/dotty-example-project). | ||
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| ### Standalone installation | ||
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| Releases are available for download on the _Releases_ | ||
| section of the Dotty repository: https://github.com/lampepfl/dotty/releases. | ||
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| We also provide a [homebrew](https://brew.sh/) package that can be installed by running | ||
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| ``` | ||
| brew install lampepfl/brew/dotty | ||
| ``` | ||
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| ### Scastie | ||
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| [Scastie], the online Scala playground, | ||
| supports Dotty. | ||
| You can try it out there without installing. | ||
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There was a problem hiding this comment. I would say "without installing anything", otherwise it looks like a word is missing from the sentence. |
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| # What’s in the 0.1.2-RC1 technology preview? | ||
| This technology preview demonstrates new language features planned for Scala 3: | ||
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| - [Intersection Types](http://dotty.epfl.ch/docs/reference/intersection-types.html) | ||
| - [Union Types](http://dotty.epfl.ch/docs/reference/union-types.html) | ||
| - [Trait Parameters](http://dotty.epfl.ch/docs/reference/trait-parameters.html) | ||
| - [Enumerations](http://dotty.epfl.ch/docs/reference/enums.html) | ||
| - [Algebraic Data Types](http://dotty.epfl.ch/docs/reference/adts.html) | ||
| - [By-Name Implicits](http://dotty.epfl.ch/docs/reference/implicit-by-name-parameters.html) | ||
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| We also ship with tools that help you try out the Dotty platform: | ||
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| - [IDE features for Visual Studio Code](http://dotty.epfl.ch/docs/usage/ide-support.html) | ||
| - [sbt support, including retro-compatibility with Scala 2](https://github.com/lampepfl/dotty-example-project) | ||
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| See here for the full [release notes](http://dotty.epfl.ch/docs/release-notes/0.1.2.html). | ||
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| ## Release schedule | ||
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| We are adopting a time-based release schedule: | ||
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There was a problem hiding this comment. Starting from this release, we are adopting ... |
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| - Nightly builds will be published, for those wanting to be at the forefront of | ||
| development. | ||
| - Every 6 weeks, a release candidate will be cut based on the last nightly build, | ||
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There was a problem hiding this comment. also "... nightly build. The release candidates ..." (so period + start new sentence) |
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| the release candidates let library authors test their code in advance of each | ||
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There was a problem hiding this comment. Why only library authors and not app authors? |
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| release. Multiple release candidates may be released during each 6 weeks | ||
| period to fix regressions. | ||
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There was a problem hiding this comment. Do you really want to mention those nitty-gritty details in the blog post? I would make this bullet much shorter. Something like:
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| - Every 6 weeks, the last release candidate becomes a release. | ||
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| At the end of 6 weeks, the milestone will be promoted to a stable release. | ||
| See here for the full [version number explanation](http://dotty.epfl.ch/docs/usage/version-numbers.html). | ||
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| ## What are the next steps? | ||
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| Over the coming weeks and months, we plan to work on the following topics: | ||
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| - [Integrate Local optimizations developed in Dotty linker](https://github.com/lampepfl/dotty/pull/2513); | ||
| - [Add Language-level support for HMaps and HLists](https://github.com/lampepfl/dotty/pull/2199); | ||
| - [Port global optimizations from Dotty linker](https://github.com/lampepfl/dotty/pull/1840). | ||
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| If you want to get your hands dirty with any of this, now is a good | ||
| moment to get involved! Join the team of contributors, including | ||
| Martin Odersky ([@odersky](https://twitter.com/odersky)) | ||
| Dmitry Petrashko ([@DarkDimius](https://twitter.com/DarkDimius)), | ||
| Guillaume Martres ([@smarter](https://github.com/smarter)), | ||
| Felix Mulder ([@felixmulder](https://twitter.com/felixmulder)), | ||
| Nicolas Stucki ([@nicolasstucki](https://github.com/nicolasstucki)), | ||
| Liu Fengyun ([@liufengyun](https://github.com/liufengyun)), | ||
| Olivier Blanvillain ([@OlivierBlanvillain](https://github.com/OlivierBlanvillain)), | ||
| and others! | ||
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| ## Library authors: Join our community build | ||
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| Dotty now has a set of libraries that are built against every nightly snapshot. | ||
| Currently this includes scalatest, squants and algebra. | ||
| Join our [community build](https://github.com/lampepfl/dotty-community-build) | ||
| to make sure that our regression suite includes your library. | ||
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| To get started, see <https://github.com/lampepfl/dotty>. | ||
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| [Scastie]: https://scastie.scala-lang.org/?target=dotty | ||
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| layout: doc-page | ||
| title: 0.1.2 release notes | ||
| --- | ||
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| 0.1.2 will be the first public release of Dotty. | ||
| Being first, those notes are incomplete. | ||
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| This document is work in progress until 0.1.2-final is released. | ||
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There was a problem hiding this comment. This document is a work in progress |
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| This note is up-to-date based on 0.1.2-RC1 and will be updated | ||
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| with changes that happen during RC stabilization cycle. | ||
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| # Required Java Version | ||
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| Dotty 0.1.2 targets Java 8. We don't have plans so far to add support for earlier versions of Java. | ||
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There was a problem hiding this comment. Remove "so far". I very much doubt you will ever reconsider this. |
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| # IDE support for Dotty | ||
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| # Reporting Bugs / Known Issues | ||
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| Please [file](https://github.com/lampepfl/dotty/issues) any bugs you encounter. If you’re unsure whether something is a bug, | ||
| please ask on Dotty [gitter channel](https://github.com/lampepfl/dotty). | ||
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| # SBT builds dotty that builds dotty | ||
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| # Dotty Doc | ||
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There was a problem hiding this comment. Is that the official spelling? Because there's been JavaDoc, Scaladoc, and now Dotty Doc. |
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| Dotty has added support for Dotty Doc. | ||
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There was a problem hiding this comment. What does that even mean? Consider something that's not "something happened in the past" but more like "something is true now". For example "Documentation for Dotty libraries are made with Dotty Doc." or any other present-tense description. |
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| Actually, the dotty documentation site [http://dotty.epfl.ch/docs/](http://dotty.epfl.ch/docs/) is generated by it. | ||
| Looks nice, doesn't it? | ||
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There was a problem hiding this comment. Use a slanted quote ’ like you use elsewhere in this document. |
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| #Other implemented features: | ||
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There was a problem hiding this comment. Some Markdown processors will not like the absence of space after |
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| This release ships with the following features: | ||
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| - TASTY support by [@odersky], [@xeno-by] and [@darkdimius] [\[1\]][1] | ||
| - HK-types support by [@odersky], [@smarter] and [@darkdimius] [\[2\]][2] | ||
| - Intersection and Union Types by [@odersky] [\[3\]][3] [\[4\]][3] | ||
| - Enumerations by [@odersky] [\[4\]][4] [\[5\]][5] [\[6\]][6] | ||
| - Implicit By-Name Parameters by [@odersky] [\[7\]][7] | ||
| - Miniphases-based design by [@darkdimius], [@odersky] and [@olhotak] [\[8\]][8] | ||
| - @static methods support by [@darkdmius] [\[9\]][9] | ||
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There was a problem hiding this comment. Consider surrounding |
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| - Non-blocking lazy vals by [@darkdimius] [\[10\]][10] | ||
| - JVM code emission by [@magarciaEPFL] and [@darkdimius] [\[11\]][11] | ||
| - efficient multi-dimensional array allocation by [@darkdimius] [\[12\]][12] | ||
| - default-method based trait composition [@odersky] and [@darkdimius] [\[13\]][13] [\[14\]][14] | ||
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There was a problem hiding this comment. Efficient, Default. Be consistent in your casing. Always start a bullet with an uppercase. |
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| - Trait parameters by [@odersky] [\[15\]][15] | ||
| - Working contravariant implicits by [@odersky] [\[16\]][16] | ||
| - Option-less pattern matching by [@odersky], [@darkdimius] and [@OlivierBlanvillain] [\[17\]][17] | ||
| - SAM-based anonymous functions by [@magarciaEPFL], [@darkdimius] and [@retronym] [\[18\]][18] | ||
| - Patter matching support by [@darkdimius] [\[19\]][19] | ||
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| - Value classes support by [@smarter] and [@darkdimius] [\[20\]][20] | ||
| - Pattern matching exhaustively checks by [@liufengyun] [\[21\]][21] | ||
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| - Tailrec optimization by [@darkdimius] [\[22\]][22] [\[23\]][23] | ||
| - VS code protocol implementation by [@smarter] [\[24\]][24] | ||
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There was a problem hiding this comment. Should that be "Language server protocol"? |
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| - VS code plugin by [@smarter] [\[24\]][24] | ||
| - Vulpix: new test-suite by [@felixmulder] that replaces partest by [@vsalvis] [\[25\]][25] | ||
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There was a problem hiding this comment. new test-suite driver? Or something like that. It reads as if you have replaced the tests of the test suite. |
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| - java parser by [@olhotak] [\[26\]][26] | ||
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| - local optimizations(-optimise) by [@darkdimius] and [@OlivierBlanvillain] [\[27\]][27] | ||
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There was a problem hiding this comment. Local and space before "( |
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| - sbt support by [@smarter] [\[28\]][28] | ||
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There was a problem hiding this comment. Special case: this needs to stay lowercase "sbt" since sbt is an all-lowercase proper noun. |
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| - DottyDoc by [@felixmulder] [\[29\]][29] | ||
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There was a problem hiding this comment. Difference spelling of DottyDoc here. |
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| - Implicit Function Types by [@odersky] [\[30\]][30] | ||
| - Phantom Types by [@nicolasstucki] [\[31\]][31] | ||
| - Functions with more than 22 parameters by [@odersky] [\[32\]][32] | ||
| - Inline keyword by [@odersky] [\[33\]][33] | ||
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| [@odersky]: https://twitter.com/odersky | ||
| [@DarkDimius]: https://twitter.com/DarkDimius | ||
| [@smarter]: https://github.com/smarter | ||
| [@felixmulder]: https://twitter.com/felixmulder | ||
| [@nicolasstucki]: https://github.com/nicolasstucki | ||
| [@liufengyun]: https://github.com/liufengyun | ||
| [@OlivierBlanvillain]: https://github.com/OlivierBlanvillain | ||
| [@olhotak]: https://plg.uwaterloo.ca/~olhotak/ | ||
| [@retronym]: https://github.com/retronym | ||
| [@xeno-by]: https://github.com/xeno-by | ||
| [@vsalvis]: https://github.com/vsalvis | ||
| [@magarciaEPFL]: https://github.com/magarciaEPFL | ||
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| [1]: https://docs.google.com/document/d/1h3KUMxsSSjyze05VecJGQ5H2yh7fNADtIf3chD3_wr0/edit | ||
| [2]: https://infoscience.epfl.ch/record/222780?ln=en | ||
| [3]: http://dotty.epfl.ch/docs/reference/intersection-types.html | ||
| [4]: http://dotty.epfl.ch/docs/reference/union-types.html | ||
| [5]: http://dotty.epfl.ch/docs/reference/adts.html | ||
| [6]: http://dotty.epfl.ch/docs/reference/desugarEnums.html | ||
| [7]: http://dotty.epfl.ch/docs/reference/implicit-by-name-parameters.html | ||
| [8]: https://infoscience.epfl.ch/record/228518 | ||
| [9]: http://docs.scala-lang.org/sips/pending/static-members.html | ||
| [10]: http://docs.scala-lang.org/sips/pending/improved-lazy-val-initialization.html | ||
| [11]: http://magarciaepfl.github.io/scala/ | ||
| [12]: https://github.com/lampepfl/dotty/commit/b2215ed23311b2c99ea638f9d7fcad9737dba588 | ||
| [13]: https://github.com/lampepfl/dotty/pull/187 | ||
| [14]: https://github.com/lampepfl/dotty/pull/217 | ||
| [15]: http://dotty.epfl.ch/docs/reference/trait-parameters.html | ||
| [16]: https://github.com/lampepfl/dotty/commit/89540268e6c49fb92b9ca61249e46bb59981bf5a | ||
| [17]: https://github.com/lampepfl/dotty/pull/174 | ||
| [18]: https://github.com/lampepfl/dotty/pull/488 | ||
| [19]: https://github.com/lampepfl/dotty/pull/174 | ||
| [20]: https://github.com/lampepfl/dotty/pull/411 | ||
| [21]: https://github.com/lampepfl/dotty/pull/1364 | ||
| [22]: https://github.com/lampepfl/dotty/pull/1227 | ||
| [23]: https://github.com/lampepfl/dotty/pull/117 | ||
| [24]: https://github.com/lampepfl/dotty/pull/2532 | ||
| [25]: https://github.com/lampepfl/dotty/pull/2194 | ||
| [26]: https://github.com/lampepfl/dotty/pull/213 | ||
| [27]: https://github.com/lampepfl/dotty/pull/2513 | ||
| [28]: https://github.com/lampepfl/dotty/pull/2361 | ||
| [29]: https://github.com/lampepfl/dotty/pull/1453 | ||
| [30]: http://dotty.epfl.ch/docs/reference/implicit-function-types.html | ||
| [31]: https://github.com/lampepfl/dotty/pull/2136 | ||
| [32]: https://github.com/lampepfl/dotty/pull/1758 | ||
| [33]: http://dotty.epfl.ch/docs/reference/inline.html | ||
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| # Contributors | ||
| Dotty team and contributes have closed 750 issues and has merged a total of 1258 pull requests. | ||
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There was a problem hiding this comment. The Dotty team and contributors ... and have merged |
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| Concretely, according to | ||
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| ``` | ||
| git ls-tree -r -z --name-only HEAD -- |egrep -z -Z -E '\.(scala)$'| xargs -0 -n1 git blame --line-porcelain |grep "^author "|sort|uniq -c|sort -nr | ||
| ``` | ||
| 71 people contributed code, tests, and/or documentation to Dotty 0.1.2-RC1. | ||
| The following people have contributed to this release: | ||
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| | commits | blame lines | Name | | ||
| |---------|-------------|-----------------------------| | ||
| | 4346 | 82017 | Martin Odersky | | ||
| | 1288 | 83070 | Dmitry Petrashko | | ||
| | 19 | 35382 | Samuel Gruetter | | ||
| | 826 | 20148 | Felix Mulder | | ||
| | 567 | 10454 | Guillaume Martres | | ||
| | 136 | 5311 | liu fengyun | | ||
| | 189 | 4449 | Nicolas Stucki | | ||
| | 21 | 3717 | Sébastien Doeraene | | ||
| | 30 | 1711 | Ondrej Lhotak | | ||
| | 33 | 1094 | Enno Runne | | ||
| | 47 | 735 | Olivier Blanvillain | | ||
| | 4 | 480 | Valthor Halldorsson | | ||
| | 7 | 343 | Aleksander Boruch-Gruszecki | | ||
| | 25 | 220 | VladimirNik | | ||
| | 3 | 186 | Enno | | ||
| | 8 | 143 | Clemens Winter | | ||
| | 16 | 133 | Jason Zaugg | | ||
| | 3 | 116 | Miron Aseev | | ||
| | 4 | 109 | Shane Delmore | | ||
| | 5 | 100 | Alexander Myltsev | | ||
| | 5 | 96 | Abel Nieto | | ||
| | 1 | 92 | Dmitry Melnichenko | | ||
| | 22 | 88 | Jonathan Brachthäuser | | ||
| | 5 | 87 | Guillaume Massé | | ||
| | 20 | 75 | vsalvis | | ||
| | 2 | 64 | Tobias Schlatter | | ||
| | 4 | 51 | Ólafur Páll Geirsson | | ||
| | 4 | 49 | Sebastian Harko | | ||
| | 2 | 48 | Andrew Zurn | | ||
| | 3 | 44 | jvican | | ||
| | 1 | 43 | Jarrod Janssen | | ||
| | 1 | 43 | Igor Mielientiev | | ||
| | 2 | 35 | Thiago Pereira | | ||
| | 5 | 32 | Martijn Hoekstra | | ||
| | 1 | 26 | Bartosz Krasiński | | ||
| | 1 | 24 | Adam Trousdale | | ||
| | 10 | 22 | Aggelos Biboudis | | ||
| | 12 | 20 | Paolo G. Giarrusso | | ||
| | 1 | 17 | Jon-Anders Teigen | | ||
| | 17 | 16 | Vlad Ureche | | ||
| | 1 | 16 | Jyotman Singh | | ||
| | 4 | 15 | Lucas Burson | | ||
| | 1 | 12 | Markus Hauck | | ||
| | 3 | 11 | Varunram Ganesh | | ||
| | 2 | 11 | Reto Hablützel | | ||
| | 3 | 10 | Allan Renucci | | ||
| | 4 | 9 | Sarunas Valaskevicius | | ||
| | 2 | 9 | Nikolay.Tropin | | ||
| | 1 | 9 | Csongor Kiss | | ||
| | 2 | 7 | dos65 | | ||
| | 2 | 6 | Varunram | | ||
| | 6 | 5 | Nada Amin | | ||
| | 1 | 4 | ruben | | ||
| | 1 | 4 | Kazuyoshi Kato | | ||
| | 1 | 3 | Jonathan Rodriguez | | ||
| | 1 | 3 | andreaTP | | ||
| | 1 | 1 | AlexSikia | | ||
| | 3 | 0 | Edmund Noble | | ||
| | 2 | 0 | jvican | | ||
| | 3 | 0 | Allan Renucci | | ||
| | 3 | 0 | Senia-psm | | ||
| | 2 | 0 | Lukas Rytz | | ||
| | 2 | 0 | Jan Christopher Vogt | | ||
| | 2 | 0 | Raymond Tay | | ||
| | 1 | 0 | Matthias Sperl | | ||
| | 1 | 0 | Herdy Handoko | | ||
| | 1 | 0 | Grzegorz Kossakowski | | ||
| | 1 | 0 | George Leontiev | | ||
| | 1 | 0 | Sandro Stucki | | ||
| | 1 | 0 | Adriaan Moors | | ||
| | 1 | 0 | Simon Hafner | | ||
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| layout: doc-page | ||
| title: "Version numbers" | ||
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| Dotty uses multiple schemes for version numbering. | ||
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| Stable releases have version numbers of the form `0.${x}.${y}`, where x is a main version and y is a bug-fix update id. | ||
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| Release candidates version numbers have the form `0.${x}.${y}-RC${z}`. Release candidates are updated by incrementing `${z}`. | ||
| Every 6 weeks, the latest release candidate is promoted to stable and becomes version `0.${x}.${y}`. | ||
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| Nightlies have version numbers of the form `0.${x}.${y}-bin-${date}-${sha}-NIGHTLY`. | ||
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There was a problem hiding this comment. Shouldn't There was a problem hiding this comment. AFAIK -bin isn't needed in case version doesn't look like NIGHTLY or SNAPSHOT. SBT magic. |
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| Every 6 weeks, the latest nightly is promoted to release candidate becomes version `0.${x}.${y}-RC1`. | ||
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we are excited