kotlinx-io-core/kotlinx.io/Buffer/transferFrom

transferFrom

open override fun transferFrom(source: RawSource): Long(source)

Removes all bytes from source and write them to this sink. Returns the number of bytes read which will be 0 if source is exhausted.

Parameters

source

the source to consume data from.

Throws

when the sink or source is closed.

when some I/O error occurs.

Samples

import kotlinx.io.*
import kotlin.test.*

fun main() { 
   //sampleStart 
   val src: Source = Buffer().also { it.writeString("Some data to transfer") }
val dst = Buffer().also { it.writeString("Transferred: ") }

dst.transferFrom(src)

assertTrue(src.exhausted())
assertEquals("Transferred: Some data to transfer", dst.readString()) 
   //sampleEnd
}