CODEWITHSUNDEEP
kotlin
user971169
user971169

Reputation: 110

Kotlin foreachblock example

I am trying to learn Kotlin and am having trouble with file.foreachblock function(https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.io/java.io.-file/for-each-block.html).

Specifically I want to update the messageDigest with the byte array, but it is not clear to me how I would do this. Any examples would be great

something like

file.foreachblock(){ ->
  messageDigest.update(it.bytearray, 0, it.length);
}

Upvotes: 2

Views: 617

Answers (1)

Ilya
Ilya

Reputation: 23115

A lambda passed to forEachBlock must accept two parameters. First is a ByteArray buffer, and second is the number of bytes with actual data in that array. 

file.forEachBlock { buffer, count ->
    messageDigest.update(buffer, 0, count)
}

Upvotes: 6

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