hexToByteArray

import kotlin.test.*

fun main() { 
   //sampleStart 
   val expectedData = byteArrayOf(0xDE.toByte(), 0x2D, 0x02, 0xC0.toByte(), 0x5C, 0x0E)

// Using the default format
println("de2d02c05c0e".hexToByteArray().contentEquals(expectedData)) // true

// Parsing is case-insensitive
println("DE2D02C05C0E".hexToByteArray().contentEquals(expectedData)) // true

// Using a custom format
val format = HexFormat {
    bytes {
        bytesPerLine = 4
        byteSeparator = " " // One space
        bytePrefix = "0x"
    }
}
println("0xDE 0x2D 0x02 0xC0\n0x5C 0x0E".hexToByteArray(format).contentEquals(expectedData)) // true

// Parsing unsigned bytes results in the unsigned versions of the same bytes
val expectedUnsignedData = expectedData.toUByteArray()
println("de2d02c05c0e".hexToUByteArray().contentEquals(expectedUnsignedData)) // true

// Parsing fails if the input string does not conform to the specified format.
// In this case, there is no line separator after the fourth formatted byte.
// "0xDE 0x2D 0x02 0xC0 0x5C 0x0E".hexToByteArray(format) // will fail with IllegalArgumentException 
   //sampleEnd
}