Description

Approach

Course installation

Install Coursier

Install a JDK

$ cs java --jvm temurin:1.11 --setupCheckingif~/.profile,~/.zprofile,~/.bash_profile need(s) updating.Some shell configuration files were updated. It is recommended to close this terminal once the setupcommand is done, and open a new onefor the changes to be taken into account

$ java -versionopenjdk version"11.0.20" 2023-07-18OpenJDK Runtime Environment Temurin-11.0.20+8 (build 11.0.20+8)OpenJDK 64-Bit Server VM Temurin-11.0.20+8 (build 11.0.20+8, mixed mode)

Installcmtc

$ cs install --contrib cmtcWrote cmtc

$ cmtcUsage: cmtc<COMMAND>Commands:  goto-exercise        Move to a given exercise. Pullin tests and readme filesfor that exercise  goto-first-exercise  Move to the first exercise. Pullin tests and readme filesfor that exercise  install              Install a course - from either alocal directory, a zip file on thelocal file system or a Github project  list-exercises       List all exercises and their IDsin the repo. Mark the active exercise with a star  list-saved-states    List all saved exercise states,if any.  next-exercise        Move to the next exercise. Pullin tests and readme filesfor that exercise  previous-exercise    Move to the previous exercise. Pullin tests and readme filesfor that exercise  pull-solution        Pullin all codefor the active exercise. Alllocal changes are discarded  pull-template        Selectively pullin a given file or folderfor the active exercise  restore-state        Restore a previously saved exercise state  save-state           Save the state of the active exercise  set-current-course   Sets the current course to point to a directory  version              Print version info

Install the (Scala Center) "Scala 3 migration course"

$ cmtc install -s scalacenter/scala3-migration-courseDownloading studentified course from'https://github.com/scalacenter/scala3-migration-course/releases/download/v0.1.0/scala3-migration-course-student.zip' to courses directoryProject scala3-migration-course (v0.1.0) successfully installed to:  /Users/ericloots/Library/Caches/com.lunatech.cmt/Courses/scala3-migration-courseCurrent courseset to'/Users/ericloots/Library/Caches/com.lunatech.cmt/Courses/scala3-migration-course'Exercisesin repository:  1.*   exercise_000_initial_state  2.      exercise_001_install_sbt_scala3_migrate  3.      exercise_002_migrate_dependencies  4.      exercise_003_migrate_scalac_options  5.      exercise_004_migrate_syntax  6.      exercise_005_migrate_types  7.      exercise_006_update_scala_version

Verifying the course installation

$ sbttest[info] welcome to sbt 1.9.3 (Eclipse Adoptium Java 11.0.20)[info] loading settingsfor project global-plugins from idea.sbt ...[info] loading global plugins from /Users/ericloots/.sbt/1.0/plugins[info] loading settingsfor project scala3-migration-course-build from plugins.sbt ...[info] loading project definition from /Users/ericloots/Library/Caches/com.lunatech.cmt/Courses/scala3-migration-course/project[info] loading settingsfor project main from build.sbt ...[info]set current project to main (in build file:/Users/ericloots/Library/Caches/com.lunatech.cmt/Courses/scala3-migration-course/)[info] compiling 8 Scala sources to /Users/ericloots/Library/Caches/com.lunatech.cmt/Courses/scala3-migration-course/target/scala-2.13/classes ...[warn] 1 deprecation[warn] 1 deprecation (since 2.13.11)[warn] 2 deprecationsin total; re-run with -deprecationfor details[warn] three warnings found[info] compiling 8 Scala sources to /Users/ericloots/Library/Caches/com.lunatech.cmt/Courses/scala3-migration-course/target/scala-2.13/test-classes ...[warn] 1 deprecation[warn] 1 deprecation (since 2.13.3)[warn] 2 deprecationsin total; re-run with -deprecationfor details[warn] three warnings found[info] example.SyntaxRewritesTests:[info]   + parentheses around lambda parameter 0.017s[info]   + auto-application 0.0s[info] example.FunctorTests:[info]   + either left functor 0.002s[info] example.DiffUtilTests:[info]   + diff 0.01s[info] example.CatsTests:[info]   + combine all strings 0.203s[info] example.TypeIncompatTests:[info]   +type incompat 0.0s[info] example.BetterMonadicForTests:[info]   + count twice 0.001s[info] example.ScalametaTests:[info]   + parse Scala expression 0.076s|D| example.BuildInfo.scalacOptions = List(-encoding, UTF-8, -target:jvm-1.8, -Xsource:3, -Wunused:imports,privates,locals, -explaintypes)[info] example.BuildInfoTests:[info]   + scalacOptions 0.003s[info] Passed: Total 9, Failed 0, Errors 0, Passed 9[success] Total time: 4 s, completed 5 Sep 2023, 16:15:22

Install the (Lunatech) "Moving from Scala 2 to Scala 3" course

$ cmtc install -f -s lunatech-labs/lunatech-scala2-to-scala3-courseDownloading studentified course from'https://github.com/lunatech-labs/lunatech-scala2-to-scala3-course/releases/download/3.0.2/lunatech-scala2-to-scala3-course-student.zip' to courses directoryProject lunatech-scala2-to-scala3-course (3.0.2) successfully installed to:  /Users/ericloots/Library/Caches/com.lunatech.cmt/Courses/lunatech-scala2-to-scala3-courseCurrent courseset to'/Users/ericloots/Library/Caches/com.lunatech.cmt/Courses/lunatech-scala2-to-scala3-course'Exercisesin repository:  1.*   exercise_000_sudoku_solver_initial_state  2.      exercise_001_dotty_deprecated_syntax_rewriting  3.      exercise_002_dotty_new_syntax_and_indentation_based_syntax  4.      exercise_003_top_level_definitions  5.      exercise_004_parameter_untupling  6.      exercise_005_extension_methods  7.      exercise_006_using_and_summon  8.      exercise_007_givens  9.      exercise_008_enum_and_export 10.      exercise_009_union_types 11.      exercise_010_opaque_type_aliases 12.      exercise_011_multiversal_equality 13.      exercise_020_opaque_type_aliases_alt 14.      exercise_021_multiversal_equality

Verifying the course installation

$ sbttest[info] welcome to sbt 1.9.3 (Eclipse Adoptium Java 11.0.20)[info] loading settingsfor project global-plugins from idea.sbt ...[info] loading global plugins from /Users/ericloots/.sbt/1.0/plugins[info] loading settingsfor project lunatech-scala2-to-scala3-course-build from plugins.sbt ...[info] loading project definition from /Users/ericloots/Library/Caches/com.lunatech.cmt/Courses/lunatech-scala2-to-scala3-course/project[info] compiling 1 Scalasource to /Users/ericloots/Library/Caches/com.lunatech.cmt/Courses/lunatech-scala2-to-scala3-course/project/target/scala-2.12/sbt-1.0/classes ...[info] loading settingsfor project moving-from-scala-2-to-scala-3 from build.sbt ...[info]set current project to moving-from-scala-2-to-scala-3 (in build file:/Users/ericloots/Library/Caches/com.lunatech.cmt/Courses/lunatech-scala2-to-scala3-course/)[info] compiling 11 Scala sources to /Users/ericloots/Library/Caches/com.lunatech.cmt/Courses/lunatech-scala2-to-scala3-course/target/scala-2.13/classes ...[warn] /Users/ericloots/Library/Caches/com.lunatech.cmt/Courses/lunatech-scala2-to-scala3-course/src/main/scala/org/lunatechlabs/dotty/sudoku/SudokuProblemSender.scala:81:44: Auto-application to`()` is deprecated. Supply the empty argument list`()` explicitly to invoke method next,[warn] or remove the empty argument list from its definition (Java-defined methods are exempt).[warn] In Scala 3, an unapplied method like this will be eta-expanded into a function.[warn]         val nextRowUpdates = rowUpdatesSeq.next[warn]                                            ^[warn] one warning found[info] compiling 4 Scala sources to /Users/ericloots/Library/Caches/com.lunatech.cmt/Courses/lunatech-scala2-to-scala3-course/target/scala-2.13/test-classes ...org.lunatechlabs.dotty.sudoku.CellMappingSuite:org.lunatechlabs.dotty.sudoku.ReductionRuleSuite:  + Mapping row coordinates should resultin correct column& block coordinates 0.02s  + Mapping column coordinates should resultin correct row& block coordinates 0.001s  + Mapping block coordinates should resultin correct row& column coordinates 0.001s  + Applying reduction rules should eliminate valuesin isolatedcomplete sets from occurrencesin other cells (First reduction rule) 0.045s  + Applying reduction rules should eliminate valuesin isolatedcomplete sets of 5 values from occurrencesin other cells (First reduction rule) 0.001s  + Applying reduction rules should eliminate valuesin 2 isolatedcomplete sets of 3 values from occurrencesin other cells (First reduction rule) 0.001s  + Applying reduction rules should eliminate valuesin shadowedcomplete sets from occurrencesin the same cells (Second reduction rule) 0.001s  + Applying reduction rules should eliminate valuesin shadowedcomplete (6 value) sets from occurrencesin the same cells (Second reduction rule) 0.001sSLF4J: A number (1) of logging calls during the initialization phase have been intercepted and areSLF4J: now being replayed. These are subject to the filtering rules of the underlying logging system.SLF4J: See also http://www.slf4j.org/codes.html#replayorg.lunatechlabs.dotty.sudoku.SudokuDetailProcessorSuite:  + Sending no updates to a sudoku detail processor should resultin sending a SudokuDetailUnchanged message 0.007s  + Sending an update to a fresh instance of the SudokuDetailProcessor that sets one cell to a single value should resultin sending an update that reflects this update 0.002s  + Sending a series of subsequent Updates to a SudokuDetailProcessor should resultin sending updates and ultimatelyreturn no changes 0.003s[info] Passed: Total 11, Failed 0, Errors 0, Passed 11[success] Total time: 5 s, completed 24 Aug 2023, 08:30:54

Installing "The Silver Searcher"

Installing an IDE