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Yuichi Nishiwaki 2017-03-23 00:42:20 +09:00
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# Benz # libpicrin
Benz is a super tiny scheme interpreter intended to be embedded in other applications such as game engine and network server. It provides a subset language of R7RS with several useful extensions. By default, Benz just contains some C files and headers and this README file. In embedding, you only need to copy the files into the project and add `include` dir to the include path. libpicrin is a super tiny scheme interpreter intended to be embedded in other applications such as game engine and network server. It provides a subset language of R7RS with several useful extensions. By default, libpicrin just contains some C files and headers and this README file. In embedding, you only need to copy the files into the project and add `include` dir to the include path.
Originally, Benz used to be the core component of [Picrin Scheme](https://github.com/picrin-scheme/picrin). They are currently maintained at separate repositories. Originally, libpicrin used to be the core component of [Picrin Scheme](https://github.com/picrin-scheme/picrin). They are currently maintained at separate repositories.
## Example ## Example
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### call/cc ### call/cc
Full continuation has many problems in embbeding into applications. By default, Benz's call/cc operator does not support continuation that can handle re-entering (it only supports escape continuations). To remove this restriction, please use an add-on provided from [Picrin Scheme's repository](https://github.com/picrin-scheme/picrin/tree/master/contrib/03.callcc). Full continuation has many problems in embbeding into applications. By default, libpicrin's call/cc operator does not support continuation that can handle re-entering (it only supports escape continuations). To remove this restriction, please use an add-on provided from [Picrin Scheme's repository](https://github.com/picrin-scheme/picrin/tree/master/contrib/03.callcc).
### Strings ### Strings
Benz utilize rope data structure to implement string type. Thanks to the implementation, string-append is guaranteed to be done in a constant time (so do string-copy, when ascii-only mode is enabled). In return for that, strings in benz are immutable by default. It does not provide mutation API (string-set!, string-copy! and string-fill! in R7RS). This restriction can be also removed with an add-on in [Picrin Scheme's repository](https://github.com/picrin-scheme/picrin/tree/master/contrib/03.mutable-string). libpicrin utilize rope data structure to implement string type. Thanks to the implementation, string-append is guaranteed to be done in a constant time (so do string-copy, when ascii-only mode is enabled). In return for that, strings in libpicrin are immutable by default. It does not provide mutation API (string-set!, string-copy! and string-fill! in R7RS). This restriction can be also removed with an add-on in [Picrin Scheme's repository](https://github.com/picrin-scheme/picrin/tree/master/contrib/03.mutable-string).
### Dictionaries ### Dictionaries
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### Attribute ### Attribute
Benz has an facility to get or set metadata to any heap object. libpicrin has an facility to get or set metadata to any heap object.
## Authors ## Authors
See https://github.com/picrin-scheme/benz and https://github.com/picrin-scheme/picrin for details. See https://github.com/picrin-scheme/picrin for details.
## LICENSE ## LICENSE