kmath-coroutines/space.kscience.kmath.chains/ConstantChain

ConstantChain

class ConstantChain<out T>(val value: T) : Chain<T> (source)

A chain that repeats the same value

Constructors

ConstantChain

constructor(value: T)

Functions

asSequence

fun <R> Chain<R>.asSequence(): Sequence<R>

Represent a chain as a sequence

async

inline fun <T, R> Flow<T>.async(dispatcher: CoroutineDispatcher = Dispatchers.Default, crossinline block: suspend CoroutineScope.(T) -> R): AsyncFlow<R>

chunked

fun Flow<Double>.chunked(bufferSize: Int): Flow<DoubleBuffer>

Specialized flow chunker for real buffer

fun <T> Flow<T>.chunked(bufferSize: Int, bufferFactory: BufferFactory<T>): Flow<Buffer<T>>

Collect incoming flow into fixed size chunks

collect

open suspend override fun collect(collector: FlowCollector<T>)

combine

@UnstableKMathAPI

fun <T, R> Chain<T>.combine(mapper: suspend (Chain<T>) -> R): Chain<R>

Map the whole chain

combineWithState

@UnstableKMathAPI

fun <T, S, R> Chain<T>.combineWithState(state: S, stateFork: (S) -> S, mapper: suspend S.(Chain<T>) -> R): Chain<R>

cumulativeSum

fun <T> Flow<T>.cumulativeSum(group: GroupOps<T>): Flow<T>

filter

fun <T> Chain<T>.filter(block: (T) -> Boolean): Chain<T>

block must be a pure function or at least not use external random variables, otherwise fork could be broken

fork

open suspend override fun fork(): Chain<T>

Create a copy of current chain state. Consuming resulting chain does not affect initial chain.

iterator

operator fun <R> Chain<R>.iterator(): Iterator<R>

Represent a chain as regular iterator (uses blocking calls)

map

fun <T, R> Chain<T>.map(func: suspend (T) -> R): Chain<R>

Map the chain result using suspended transformation. Initial chain result can no longer be safely consumed since mapped chain consumes tokens. Accepts regular transformation function.

mapParallel