cyclone/_posts/2020-06-08-Released-Cyclone-Scheme-0.18.md

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post	Released Cyclone Scheme 0.18	With this release we proudly present our new package manager, Cyclone-Winds!

With this release we proudly present Cyclone-Winds, the official package manager for Cyclone Scheme. Cyclone-Winds contains a growing list of packages and is an easy way to distribute programs and libraries built using Cyclone. Please join me in thanking Arthur Maciel for writing Cyclone-Winds and making this release possible!

The cyclone-winds binary is installed as part of our bootstrap installation. Alternatively it can be built and installed separately if you already have a copy of Cyclone installed, though version 0.18 or higher is required.

Please visit the Cyclone-Winds site for more information.

Features

• Added the (cyclone foreign) library to make it easier to integrate with C code using the FFI.
• Arthur Maciel improved how icyc handles the "-p" flag, to now read/evaluate all expressions passed.

Bug Fixes

• Added a void type and a new supporting function (void). A void object is also now returned in situations where the return value is undefined: for-each and if expressions with out an else clause.
• Allow open-binary-input-file and open-binary-output-file to be accessible via the REPL.
• Fix bytevector? predicate which was accidentally aliased to vector?.
• Fix list-copy to return a non-list object instead of raising an error, per R7RS.
• Fixed eqv? to use R7RS semantics to ensure equality of different instances of the same numeric value. The function was previously just an alias of eq?.
• Support two-argument version of atan.
• Support start and end arguments to write-string.
• Updated the string comparison procedures (EG: string=?) to support more than two arguments.