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Changelog for the `reactive-banana** package

unreleased

  • Add Num, Floating, Fractional, and IsString instances for Behavior. #34

version 1.2.0.0

  • Make MonadFix superclass of MonadMoment. #128
  • Add Semigroup and Monoid instances for Event. #104
  • Semigroup compatibility with GHC 8.4.1 #168
  • Increased upper-bound on pqueue.

version 1.1.0.1

  • Adapt library to work with GHC-8.0.1.

version 1.1.0.0

  • Fix bug: Types of switchB and switchE need to be in the Moment monad.
  • Clean up and simplify model implementation in the Reactive.Banana.Model module.
  • Update type signatures of the interpret* functions to make it easier to try FRP functions in the REPL.
  • Remove showNetwork function.

version 1.0.0.1

  • Improve documentation.
    • Add prose section on recursion.
    • Improve explanation for the changes function.
  • Bump transfomers dependency.
  • Remove defunct UseExtensions flag from cabal file.

version 1.0.0.0

The API has been redesigned significantly in this version!

  • Remove phantom type parameter t from Event, Behavior and Moment types.
    • Change accumulation functions (accumB, accumE, stepper) to have a monadic result type.
    • Merge module Reactive.Banana.Switch into module Reactive.Banana.Combinators.
    • Simplify types of the switching functions (switchE, switchB, observeB, execute).
    • Remove functions trimE and trimB.
    • Remove types AnyMoment and Identity.
  • Remove Frameworks class constraint, use MomentIO type instead.
    • Add class MonadMoment for both polymorphism over the Moment and MomentIO types.
  • Change type Event to only allow a single event per moment in time.
    • Remove function union. Use unionWith instead.
    • Change function unions to only merge events of type Event (a -> a).
  • Remove module Reactive.Banana.Experimental.Calm.
  • Change the model implementation in the module Reactive.Banana.Model to the new API as well.

Other changes:

  • Add mapEventIO utility function to build an Event that contains the result of an IO computation.
  • Add newBehavior utility function to build a Behavior that can be updated with a Handler.
  • Add illustrations to the API documentation.

version 0.9.0.0

  • Implement garbage collection for dynamically switched events.
  • Fix issue #79 where recursive declarations would sometimes result in dropped events.
  • Limit value recursion in the Moment monad slightly.
  • Change initial and valueB to behave subtly different when it comes to value recursion in the Moment monad.
  • Add Functor, Applicative and Monad instances for the FrameworksMoment type.
  • Depend on the pqueue package instead of the psqueues package again, as the former has been updated to work with the current version of GHC.

version 0.8.1.2

  • Depend on the psqueues package instead of the pqueue package for the priority queue.

version 0.8.1.1

  • Links to the Haskell wiki now point to the http://wiki.haskell.org subdomain.

version 0.8.1.0

  • Module Reactive.Banana.Switch now adheres to the "Functor Applicative Monad Proposal" proposal]amp-proposal.

version 0.8.0.4

  • Just a re-upload. The previous archive was broken.

version 0.8.0.3

  • Export the Future type.
  • Restrict containers dependency to lower bound 0.5.

version 0.8.0.2

  • Fix compilation issue with hiding empty from the module Reactive.Banana.Prim.Order.

version 0.8.0.1

  • New examples Counter.hs and Octave.hs.
  • Bump transfomers dependency.

version 0.8.0.0

  • A new module Reactive.Banana.Prim exports primitive combinators that you can use to implement your own FRP library with a different API.
  • The push-driven implementation in Reactive.Banana.Prim now has the performance characteristics of an actual push-driven implementation. Some work has gone into optimizing constant factors as well. However there is still no garbage collection for dynamically created events and behaviors.
  • The accumE and accumB combinators evaluate their state to WHNF to avoid a space leak. (Fixes issue #52). On the other hand, Behavior values are evaluated on demanded, i.e. only when required by the apply combinator <@> or similar.
  • Recursion between events and behaviors should now work as advertised. (Fixed issue #56).
  • The deprecated liftIONow function has been removed.
  • The type of the changes function now indicates that the new Behavior value is only available in the context of reactimate. A variant reactimate' makes this explicit.
  • The module Control.Event.Handler now exports the AddHandler type, which is now a newtype. The module Reactive.Banana.Frameworks.AddHandler has been removed.

version 0.7.1.0

  • Deprecate the liftIONow function in favor of liftIO.

version 0.7.0.0

  • Dynamic event switching. Combinators are now available in the module Reactive.Banana.Switch.
  • Rename NetworkDescription to Moment, add class constraint Frameworks t.
  • No longer compiles with the JavaScript backend of the Utrecht Haskell compiler.
  • Change the changes combinator to be less useful.

version 0.6.0.0

  • Can now be compiled with the JavaScript backend of the Utrecht Haskell compiler.
  • The push-driven implementations needs the UseExtensions flag to work. This flag is enabled by default.
  • Minor module reorganization.

version 0.5.0.0 -- announcement

This update includes numerous changes, in particular a complete overhaul of the internal implementation. Here a partial list.

  • Add collect, spill and unionWith combinators to deal with simultaneous events.
  • Remove general Monoid instance for Event to simplify reasoning about simultaneous events.
  • Add initial and changes combinators that allow you to observe updates to Behavior. Remove the Reactive.Banana.Incremental module.
  • Rename most modules,
  • Change type signatures: The main types Event, Behavior and NetworkDescription now carry an additional phantom type.

version 0.4.3.1

  • Model implementation of accumE now has the intended semantics.

version 0.4.3.0

  • Change semantics: IO actions from inside reactimate may now interleave as dictated by your event-based framework (issue #15).
  • Fix bug: compiling a network twice no longer fails due to lingering global state (issue #16).
  • Change type: remove Typeable constraint from interpret and interpretAsHandler.
  • Misc: Remove the BlackBoard application from the repository.

version 0.4.2.0

  • Change type: remove Typeable constraint from fromAddHandler.
  • Misc: the Vault data type gets its own package.
  • Misc: reactive-banana-wx now compiles properly with cabal.
  • Add some more examples to the reactive-banana-wx package.

version 0.4.1.0

  • Add <@> operator for more convenience when using apply.
  • Add support for value recursion to the NetworkDescription monad.
  • Add many examples to reactive-banana-wx.

version 0.4.0.0 -- announcement

  • Add function fromPoll to obtain behaviors from mutable data.
  • Change name: run is now called actuate.
  • Add derived data type Discrete.
  • Add function interpretAsHandler.

version 0.3.0.0 -- announcement

  • change: event networks are now first-class values, you can pause or run them.
  • change type: AddHandler now expects a way to unregister event handlers.
  • add example RunPause.hs

version 0.2.0.0 -- announcement

  • change: now implements proper semantics as pioneered by Conal Elliott
  • model implementation for semantics
  • push-driven implementation for efficiency
  • add example SlotMachine.hs

version 0.1.0.0

  • initial release