Release notes for IronScheme 1.0 RC 1

What is IronScheme?

IronScheme will aim to be a conforming R6RS Scheme implementation on the Microsoft DLR.
IronScheme provides 2 run modes: either via direct invocation on the commandline or via a REPL interactive environment.
IronScheme can also used an embedded scripting library in your .NET programs.
With 1.0 RC 1, IronScheme implements the entire R6RS Scheme standard, and only fail 4 of 8884 tests in the PLT R6RS test suite.
IronScheme runs on MS .NET and Mono. Unfortunately, it does not seem to work under 64bit on Mono.

Notably lacking for R6RS

• call/cc only supports escape continuations, trying to re-invoke a continuation will result in an error
• during development of beta 2, I made a CPS version, but is too slow to be useful currently, this will be addressed in IronScheme 2.0

Differences

• all raise's are continuable in the sense they can be caught (this is also addressed with the CPS version)

Extras

• a generic load procedure for toplevel R6RS files
• many extras procedures and macros in (ironscheme) library, mostly provided by psyntax
• syntactic CLR integration, automatic conversion of closures into delegates

Credits

• Abdulaziz Ghuloum and Kent Dybvig for psyntax (and friends) (and equal?)
• Marc Feeley for pretty-print
• anyone else I missed

Planned to-do's (before final release)

• testing of anything else
• any additional CLR integration required
• documentation

Updated (fixed/new)

• Bug fixes and optimizations
• More CLR interaction features
• Most of the library code is now written in Scheme port from C#
• All CLR interactions require case-sensitive identifiers (possible breaking change)
• Compile-time record generation
• Seperated the CLR and Scheme exception handling system
• Added a few extra SRFI's
• Replaced big number implementation with a faster one
• Added full string case folding
• See 'Source Code' page for more details

Downloads above:

The zip is just a snapshot of the installation directory, it can be put anywhere.