how can I efficiently copy a Kotlin ByteArray into...

# kotlin-native

[zt]

how can I efficiently copy a Kotlin ByteArray into a pointer to the first byte of an array?

[ephemient]

internal to K/N there is https://github.com/JetBrains/kotlin/blob/c77930c1ea099c31a28b356371716ec1998d8929/kotlin-native/Interop/Runtime/src/native/kotlin/kotlinx/cinterop/NativeMem.kt#L60 but it's not optimized (as the comment right there says)

[ephemient]

you could try

byteArray.usePinned {
    platform.posix.memcpy(ptr, it.addressOf(0), byteArray.length)
}

[zt]

Oh that should work, good idea