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CHANGELOG.md

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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

Unreleased

0.8.0 - 2024-05-16

Added

  • This changelog.

Changed

  • fmap_flat is now an associated function of the new trait FlattenableRandomStrategy.
  • fmap_flat no longer takes an impl Rng as a a parameter.

0.7.0 - 2024-04-24

Changed

  • Made Counter generic over unsigned numeric types. This lets users create Counter strategies with custom count types for optimization or compatibility purposes.

0.6.0 - 2024-04-17

Changed

  • Made rand-functors compatible with no-std crates by separating allocating RandomStrategy implementations into the alloc and std features.
    • Sampler is available without any features.
    • PopulationSampler and Enumerator are available with the alloc or std features.
    • UniqueEnumerator and Counter are available with the std feature.

0.5.0 - 2024-04-11

Added

  • A new associated function for RandomStrategy: fmap_flat. fmap_flat provides a mechanism for removing one layer of Functor nesting and enables new branching behaviour in random processes.
  • An integration test for fmap_flat which tests a random process with multiple branches.

0.4.0 - 2024-04-08

Added

  • New RandomStrategy: UniqueEnumerator. This strategy produces the set of all possible outputs of a random process, without counting duplicates.

0.3.0 - 2024-04-06

Changed

  • fmap is now an associated function of RandomStrategy, rather than a method of Functor. This removes the Functor::Output hack, which also prevented chaining fmap with fmap_flat.

Fixed

  • Type system error that prevented chaining Functor::fmap with other operations.

0.2.0 - 2024-03-23

Added

  • The RandomStrategy::fmap_rand_range associated function and the RandomRangeVariable trait, which enable sampling from a range of type RandomVariable.
  • An integration test for fmap_rand_range, which tests a random process involving a multiplication by a number between 217 and 255, inclusive.
  • New Functor implementation for HashSet, to allow downstream crates to define their own implementation of RandomStrategy with a HashSet as its Functor.

Changed

  • All primitive numeric types now implement RandomVariable.

Fixed

  • Broken Markdown in README.md.

0.1.2 - 2024-03-21

Added

  • Further documentation on use cases for Enumerator and Counter.

Changed

  • All methods in implementations of Functor, RandomStrategy, and RandomVariable now have the [inline] attribute, allowing inlining across crate boundaries.

0.1.1 - 2024-03-15

Changed

  • Renamed rand parameter of RandomStrategy::fmap_rand to rng, to prevent naming collisions with the rand crate.
  • Counter::fmap_rand will now pre-allocate enough space on the heap for a HashMap with f.len() elements, eliminating unnecessary allocations.

0.1.0 - 2024-03-11

Added

  • The traits RandomStrategy, which governs how to handle the random parts of a stochastic process, and Functor, which governs how to store the inputs, outputs, and intermediate results of a RandomStrategy.
  • The Inner trait, which is automatically implemented for types which may be contained within a Functor.
  • The RandomVariable trait, which describes types that are enumerable and can be sampled from uniformly.
  • The Sampler strategy, which produces a single possible output of a random process.
  • The PopulationSampler strategy, which creates a Vec of at most N possible outputs of a random process.
  • The Enumerator strategy, which creates a Vec of all possible outputs of a random process.
  • The Counter strategy, which creates a HashMap of all possible outputs of a random process and counts of their of occurrences.