cyclone/_posts/2017-04-14-Released-Cyclone-Scheme-0.5.md

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post	Released Cyclone Scheme 0.5	With interpreter support for loading libraries via `import`, `icyc` can now be used to its full potential.

Features

• Cyclone now has support in the interpreter for loading libraries via import. This is probably the most important change in this release and allows icyc to be used to its full potential.

• Store parameter objects in such a way that changes to a parameter object do not affect other threads that use the same parameter object.

  The specific requirement from R⁷RS is:

  parameterize must not change the associated values of any parameters in any thread other than the current thread and threads created inside the parameterize body.

• Added bignum support to SRFI 60 - integers as bits.

• Normalize the result of string->number such that bignums are only returned if the result truly is a bignum.

• Allow Cyclone to find (cyclone) prefixed libraries installed in Cyclone's system folder.

• Allow a library to export identifiers that are exported by another library. Previously a library could only export identifiers that it defined directly.

• Raise an error if an unknown identifier is found in a library's export list.

• Aric Belsito removed a hardcoded call to cyclone from the Makefile when building generate-c. Thanks!

• Allow cyclone to inline character comparison functions (char=?, etc) when only two arguments are present, for a significant speed improvement.

Bug Fixes

• Prevent exception handlers from being accidentally collected when the collector cooperates on behalf of a mutator.
• Fixed a regression where string->number returns 0 on bad input instead of #f.