Changelog of @hackage/Rattus 0.4

0.4

More general typing rules for delay, functions, and guarded recursion:

• delay and function definitions may now occur under a delay.
• Guarded recursive calls may occur at any time in the future -- not only exactly one time step into the future.
• As before, adv and recursive calls may only occur directly in the scope of delay. The scope of a delay is interrupted by adv, box, guarded recursive definitions, and function definitions.

Changes in the library:

• Rename applicative-style operators to avoid clash with Haskell's <*> operator.
• Rename types: Event -> Future; Events -> Event

0.3.1

Guarded recursive types Str and Event are now fully strict (i.e. in particular, they are strict in the component that is of a later type) as they should be.

0.3

Rattus code is now checked just after GHC's type checking phase (instead of after desugaring to Core). As a consequence, error messages for some corner cases are much improved and we don't need to use the -g2 compiler option anymore to get good error messages.

0.2

• the use of lazy data structures will now cause a warning (can be disabled by 'AllowLazyData' annotation); this check for lazy data is rather ad hoc and needs to be refined
• allow functions under ticks (but with limitations, see paper)
• strictness transformation is now similar to the 'Strict' language extension
• optimisations using custom rewrite rules

0.1.1.0

• allow mutual guarded recursion
• improve type error messages

0.1.0.0

initial release