RELEASE_NOTES.md

1.1.0

Changed

• StateMachine: removed Builder, Definition, and apply — use plain match expressions for transitions
• StateMachine: tryApply now takes (state, result) instead of (definition, state, event)

1.0.0

Initial public release.

Core

• Operators: ^ (apply), % (ignore), always, tee, swap, icast/ecast
• Guard: notNull, notEmpty, inRange, positive
• UnixTime: cached high-resolution seconds/milliseconds
• String: 25+ pipeable wrappers (contains, split, replace, truncate, toOption, ...)
• Option: toResult, zip, map2/map3, tee, ofString
• Result: defaultValue, orElse, zip, requireTrue, catch, tee/teeError
• Validation: applicative error accumulation with and! support
• NumericParsing: tryParse for Int16–Int64, Double, Single, Decimal, Byte, Bool, Guid, DateTimeOffset
• Clock: IClock interface, SystemClock, FakeClock for testing
• StateMachine: lightweight FSM helpers (goto/stay/fail/tryApply) — use plain match for transitions

Tasks

• Task: map, bind, zip/zip3, catch, singleton, fireAndForget, parallelThrottle
• TaskResult: map, bind, mapError, defaultValue, tee/teeError
• TaskGroup: structured concurrency with cancellation

Collections

• Dictionary: tryGetValue, getOrDefault
• ResizeArray: full functional wrapper (map, filter, fold, sort, tryFind, ...)
• Seq/List: tryMax, tryMin, tryAverage
• Stack: tryPeek, push, pop, reverse

Concurrency

• AtomicInt / AtomicInt64: thread-safe counters
• BoundedDict / BoundedQueue: auto-evicting bounded collections
• Signal: one-shot async notification
• PeriodicTimer: background recurring work
• ChannelWorker: sequential background processor
• SlidingWindowLimiter: rate limiting

Resilience

• Retry: exponential backoff, fixed delay
• CircuitBreaker: threshold + cooldown
• Timeout: hard deadline with linked cancellation
• Memoize: sync/async with optional TTL
• Saga: transactional orchestration with compensation

IO

• Env: getVar, requireVar, getVarOr
• Disposable: deferStack, create, combine, createOnce
• TemporaryFileStream: auto-deleting temp file backed stream
• File / Directory helpers

Buffers

• Bytes: xor, concat2/3/4, constantTimeEquals, slice, fill
• ArrayPool: useBytes, usePooled, withCopy

Hashing

• ContentHash: SHA256, SHA1, MD5 (hex output)
• Hash: combine2/3/4, ofSeq, ofArray, ofList
• CollectionComparer: structural equality for byte[], arrays, lists

ActivePatterns

• Parse: Int, Int64, Double, Decimal, Bool, Guid, DateTimeOffset
• String: NullOrWhiteSpace, Empty, WhiteSpace, StartsWithAny

Builders

• result {} — synchronous Result pipelines
• option {} — Option pipelines (binds Option and ValueOption)
• taskResult {} — async Result pipelines (binds Task, Result, Task)
• validation {} — applicative validation with and!

Types

• NonEmptyString: validated non-null/non-empty string
• ApiResponse: ok/error/ofResult wrapper

Other

• Fable compatible (sources included in nupkg)
• netstandard2.1 target
• XML docs on all public APIs
• Unlicense