v0.4.0

"Wonder Where We Land"

Note

see the release blog post with interactive examples

New ✨: docs pages, with interactive code - see paste()
As Always: a live repl in your browser to test out the release

Changes

• Improved vector internals: Will not internally avoid copies when possible, leaning on mutable views for in-place modification
• Localized keywords: The parser can now perform in-place translation of language keywords
• Metaprogramming updates: Now with eval, quote and substitute, and in the process stress-testing of the non-standard evaluation model

Usability Enhancements

• The console REPL and browser REPL both now do syntax highlighting and input validation
• The browser REPL can accept flags using url query parameters and encode snippets in urls for sharing
• _ can be included in numerics for readability

Notable Bug Fixes

• Parser fixes to allow whitespace between some more operators
• Promises will get masked by materialized values upon modification
• Nested promises will now evaluate lingering tail calls upon evaluation
• Negation operator (!) now implemented, after getting overlooked

and many more in the full changelog: v0.3.1...v0.4.0

New Contributors

• @sebffischer made their first contribution in #73
• @Lornebradia made their first contribution in #83