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60 lines
2.6 KiB
Markdown
60 lines
2.6 KiB
Markdown
---
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layout: post
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title: Released Cyclone Scheme 0.2
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excerpt: Cyclone Scheme 0.2 is now available.
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---
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Cyclone Scheme 0.2 is now available:
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[http://justinethier.github.io/cyclone/](http://justinethier.github.io/cyclone/)
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Cyclone consists of a compiler and interpreter targeting as well as written in R7RS Scheme. A garbage collector inspired by Cheney on the M.T.A. is also provided, with support for native threads.
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New features in this release:
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- Added the following libraries from R7RS-large red edition (data structures):
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- SRFI 1 list library
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- SRFI 133 vector library
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- SRFI 111 boxes
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- SRFI 117 mutable queues
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- SRFI 132 sorting library
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- Added SRFI 2, `and-let*`
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- Added `parameterize` from section 4.2.6 of R7RS to the `(scheme base)` library.
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- Added ` let-values` and ` let*-values` to `(scheme base)`.
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- Added `infinite?`, `finite?`, and `nan?` to `(scheme inexact)`.
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- Added string ports to `(scheme base)` - `open-input-string`, `open-output-string`, and `get-output-string`.
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- Added bytevector ports to `(scheme base)` - `get-output-bytevector`, `open-input-bytevector`, and `open-output-bytevector`.
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- Modified `cyclone` to also search the current working directory for built-in headers and libraries.
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Bug fixes:
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- Thanks to Mark Meyer, identified and fixed several segfaults in `write` and `display`.
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- Updated `write` to display escaped character sequences (EG: `\t`) instead of literal characters.
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- Prevent C compilation errors when building a program that only contains basic primitives or a constant at the top level.
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- Fixed the compiler to allow application of a function that can take any number of arguments. For example:
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((lambda test (write test)) 1 2 3 4)
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- Updated `eval` to handle functions that take an optional number of arguments.
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- Updated `number->string` to omit leading zeros for binary conversions.
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- Fixed `apply` to use the proper semantics when receiving more than one data argument.
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- Changed the `assoc` and `member` functions to accept an optional comparison function, and modified both families of functions to be native Scheme functions instead of C primitives.
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- Allow libraries to contain multiple `import`, `begin`, and `export` sections.
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Thanks,
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Justin
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-----------------
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User Manual
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[http://justinethier.github.io/cyclone/docs/User-Manual](http://justinethier.github.io/cyclone/docs/User-Manual)
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R7RS Compatibility
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[http://justinethier.github.io/cyclone/docs/Scheme-Language-Compliance](http://justinethier.github.io/cyclone/docs/Scheme-Language-Compliance)
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Bug Tracker
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[https://github.com/justinethier/cyclone/issues](https://github.com/justinethier/cyclone/issues)
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