# Cat Release 0.10

## Christopher Diggins — 2007-03-30 04:10:15

    There is now a new release of the new Cat version (0.10) now available

    at Google code hosting ( http://code.google.com/p/cat-language/ ).

    First good news:

    Good news: Cat now has a self-installing package for windows.

    Good news: Cat now supports optional named parameters. More on this on

    my blog entry at

    http://cdiggins.com/2007/03/29/quadratics-point-free-form-and-named-parameters/

    Good news: The parsing code has been completely overhauled, and can

    now be easily reused in other C# language projects.

    Good news: All of the source code can be browsed online at

    http://cat-language.googlecode.com/svn/trunk/

    Good news: Issues/bugs/suggestions can be reported using an online

    form at: http://code.google.com/p/cat-language/issues/list

    Good news: adding new primitives to the language based on C# classes

    is much easier.

    Good news: type annotations now support labels. For example:

      if : ('A bool ('A -> 'B) ('A -> 'B) -> 'B)

    now is

      if : ('A bool ontrue=('A -> 'B) onfalse=('A -> 'B) -> 'B)

    Not only is that more informative, it also allows the expression of

    recursive types, like:

      def m : (f=(f -> 'A) -> 'A)

      { dup eval }

    Now the bad news:

    Bad news: Cat is now only supported on windows. To be honest the code

    would only require a relatively small amount of change to be

    compilalbe on Mono, but I can't spare the time to maintain

    compatibility across platforms. If someone were to volunteer time to

    help out, I wouldn't turn them away.

    Bad news: The current release supports a smaller subset of the language.

    Bad news: The current release isn't fully tested.

    Bad news: The docs are out of sync.

    Cheers,

    Christopher