enso/RELEASES.md

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