kotlin-stdlib/kotlin.uuid/Uuid/Companion/parseHexOrNull

parseHexOrNull

fun parseHexOrNull(hexString: String): Uuid?(source)

Parses a uuid from the hexadecimal string representation as described in Uuid.toHexString, returning null if a string has a different format.

This function is case-insensitive, and for a valid hexString, the following property holds:

val uuid = Uuid.parseHexOrNull(hexString)!!
assertEquals(uuid.toHexString(), hexString.lowercase())
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Since Kotlin

2.3

Return

A uuid represented by the specified hexadecimal string, or null, if the string does not conform the format.

Parameters

hexString

A 32-character hexadecimal string representing the uuid, without hyphens.

See also

Samples

import kotlin.test.*
import kotlin.time.Instant
import kotlin.uuid.*

fun main() { 
   //sampleStart 
   val uuid = Uuid.parseHexOrNull("550E8400e29b41d4A716446655440000") // case insensitive
println(uuid) // 550e8400-e29b-41d4-a716-446655440000

assertNull(Uuid.parseHexOrNull("~550E8400e29b41d4A716446655440000~")) 
   //sampleEnd
}