enso/RELEASES.md

Enso 0.2.7 (2021-03-16)

Interpreter/Runtime

• Added rudimentary support for interoperability with Python (#1541). Due to limitations of the underlying implementation (GraalPython), this does not currently work on windows. We are working to have some means of supporting Python interop on Windows.
• Added rudimentary support for interoperability with R (#1559). Due to limitations of the underlying implementation (FastR), this does not currently work on windows. We are working to have some means of supporting R interop on Windows.
• Fixed a performance issue that occurred due to the interpreter observing deeper scopes than necessary during server-controlled execution (#1564). Execution of lambdas in the IDE is no longer far slower than it should be.
• Fixed an issue where interrupts during the execution of polyglot Java code would cause the host classloader to break, preventing further execution (#1574). Please note that the fix that has been put in place is suboptimal, and means that we are currently unable to interrupt host code during its execution. We intend to fix this as soon as a fix for the host classloader has been merged upstream. You can track the associated issue in GraalVM here.
• Fixed an issue where the interpreter would crash due to project name shadowing (#1571).

Tooling

• Added support for lazy initialization of the language server (#1535). This ensures that it behaves properly on systems where the working directories are on lazily-mounted NFS volumes.
• Fixed an issue where the unified logging infrastructure would disconnect, preventing it from gathering diagnostic logs (#1563). It now sends periodic keepalive messages to ensure that the connection has not timed out.
• Fixed project name validation in the project manager when renaming projects (#1570).

Libraries

• Added support for materializing data from databases in the database library (#1546). You can now use this library to connect to your data sources (currently only SQLite and Postgres, but support for further backends is planned).
• Reorganized the standard library in order to support plans for its future evolution (#1571).

Enso 0.2.6 (2021-03-02)

Interpreter/Runtime

• Fixed another issue where the parser would crash on partial issues, causing issues for both the Engine and IDE (#1523).
• Made panic messages short, fixing an issue where retention would cause ballooned memory usage while the full message contents were waiting to be logged (#1528).

Tooling

• Fixed an issue where dynamic dependencies were analysed incorrectly, leading to missing updates for the IDE (#1532).

Known Issues

• This is a beta release, so please see the issue tracker for issues opened before the release date.

Enso 0.2.5 (2021-02-26)

Interpreter/Runtime

• Fixed an issue where the parser would crash on partial inputs, causing issues for both the engine and IDE (#1509).
• Fixed a problem where Type_Errors would not be displayed properly when pretty printed (#1504).
• Fixed an issue with _ desugaring where it would not desugar correctly when used in function position (#1512).

Tooling

• Fixed an issue where suggestions were sometimes not being provided for modules other than Base (#1507).
• Fixed a few issues where expression and value updates were not sent when they should be (#1516, #1522, and #1508).

Libraries

• Fixed a bug where sorting boolean columns in a Table would produce incorrect output (#1505).

Known Issues

• This is a beta release, so please see the issue tracker for issues opened before the release date.

Enso 0.2.4 (2021-02-23)

Interpreter/Runtime

• Fixed another issue where dependency analysis was operating at too fine a granularity (#1495).
• Moved all user-facing errors to in-Enso errors, allowing them to be presented properly in the IDE, and interacted with by users (#1487).

Tooling

• Fixed an issue where the runtime server would not send correct expression payloads for dataflow errors (#1484).

Libraries

• Added "pretty" representations to all Error types, allowing for better display in the IDE (#1498).
• Updated the Table library with a raft of additional features (#1489). This includes table concatenation, direct indexing and column aggregation, as well as a general clean-up of the API pre-stabilisation.
• Added a flexible sorting mechanism to the Table library (#1471).

Known Issues

• This is a beta release, so please see the issue tracker for issues opened before the release date.

Enso 0.2.3 (2021-02-15)

Tooling

• Improved the robustness of the project manager and language server in the presence of rapid restarts (#1463).

Libraries

• Significantly improved the efficiency of visualising large tables through zero-cost translation to Enso's vectors (#1476).

Known Issues

• This is a beta release, so please see the issue tracker for issues opened before the release date.

Enso 0.2.2 (2021-02-11)

Language

• Significantly improved the way that dataflow errors and panics are handled in the interpreter. They now flow through the program in a far more seamless fashion, and panics are supported properly in the IDE without the whole program dying (#1433).
• Significantly improved the syntax and semantics for FFI with JVM languages, making it far more of a first-class citizen in Enso (#1443).
• Added support for polyglot JavaScript definitions to Enso (#1451). These allow users to write JavaScript inside Enso, and seamlessly call between Enso and JS code.

Interpreter/Runtime

• Fixed an issue where executing a host value could result in a NullPointerException due to a missing null check (#1413).
• Fixed an issue where dataflow analysis was incorrectly tracking usages of undefined variables. This resulted in problems for the runtime server (#1421).

Tooling

• Added support for collection of profiling information about the running program to the language server protocol (#1407). Initial support is for collection of execution-time information.
• Updated the default main in a new Enso project to be more IDE friendly (#1419).
• Added support for panic sentinels in the runtime instrument, allowing the language server to trace the expressions affected by a panic while still executing others (#1436).
• Added support for checking the Enso version for a particular project in the project manager, allowing the IDE to improve compatibility with multiple versions (#1454).

Libraries

• Updated the way that we use dataflow errors in the standard libraries, making our Base functionality much more amenable to working in the IDE (#1446).

Known Issues

• This is a beta release, so please see the issue tracker for issues opened before the release date.

Enso 0.2.1 (2021-01-15)

Language

• Removed Uniform Function Call Syntax, making the language much more predictable and allowing the compiler to provide improved diagnostics for common mistakes.

Interpreter/Runtime

• Return correct qualified names for modules at runtime, ensuring that the compiler and interpreter agree.

Tooling

• Improve the handling of bundled components with the Project Manager, ensuring rapid startup and easy integration with the IDE.
• Fixed the reflection configuration for the Project Manager, fixing a bug where it was unable to extract archives on Windows.
• The Language Server now uses qualified names in its messages, fixing a class of bugs where the IDE and Tooling did not agree on what a given expression was.
• Fixed mis-handling of tags in the documentation parsing infrastructure.

Libraries

• Implemented a stub file for the functionality built into the interpreter. This allows us to provide comprehensive documentation about this functionality for display in the IDE and for reading by library users.
• Added aggregation functionality to the Table library, allowing users to group their data.

Known Issues

• This is a beta release, so please see the issue tracker for issues opened before the release date.

Enso 0.2.0 (2021-01-05)

Language

The initial version of the Enso language, with most language features functioning.

• Flexible and concise syntax for the construction of functional programs, including pattern matching and lambdas.
• Support for currying, named and defaulted arguments, and operator sections.
• Support for user-defined data-types with fields and dynamically-dispatched methods on them.
• Importing and working with Java code in a seamless fashion using polyglot imports.
• Functional monadic state and error handling, through the use of data errors and panics.
• Opt-in tail-call optimisation.

Interpreter/Runtime

• The initial version of the interpreter and runtime.

Type System

• Nothing.

Tooling

• The initial version of the Enso Launcher and Project Manager, supporting:
  • Installation and management of Enso releases, and the GraalVM runtimes on which they depend.
  • Aggregation of logs from the various Enso service components.
  • Basic project management functionality.
  • Initialisation and set-up of a language server for a specific project.
• The initial version of the Enso Language Server, supporting:
  • Dynamic introspection and modification of the running Enso program.
  • Caching of intermediate values in computations, ensuring that only necessary parts of the program are recomputed on a change.
  • Intelligent suggestions based on semantic analysis of the code.
  • Attaching visualisation code to values in the running Enso program.

Libraries

• The initial version of Base, the core library, supporting:
  • Functionality for working with core types like Integer, Decimal, and Text.
  • Common data structures such as List, Vector, and Map.
  • Support for working with JSON data.
  • Support for working with HTTP endpoints.
  • Support for interacting with files and processes on the local machine.
  • Support for working with polyglot entities.
  • Support for metaprogramming the Enso language.
• The initial version of the Enso Table library for working with tabular data.
• The initial version of the Enso Test library, containing testing and benchmarking utilities.

Stabilised Features

• A list of stabilised APIs and/or features.

Misc

• Nothing.

Known Issues

• This is a beta release, so please see the issue tracker for issues opened before the release date.

Internal Only

• Nothing