Kotlin .decodeFromString()

The .decodeFromString() function is provided by the Kotlin Serialization library, used for deserializing data from a string representation (in JSON format) into a Kotlin object.

Syntax

fun <T> decodeFromString(deserializer: DeserializationStrategy<T>, string: String): T

• deserializer: An instance of DeserializationStrategy that defines how the string should be deserialized into data.
• string: The string representation (e.g. JSON) of the data to be deserialized.

Example

Here is an example of how to use .decodeFromString() to deserialize data from a JSON string into a Kotlin object:

import kotlinx.serialization.*
import kotlinx.serialization.json.Json

@Serializable
data class Person(val name: String, val age: Int)

fun main() {
  val jsonString = """
  {
    "name": "Johnny",
    "age": 30
  }
  """
  // Deserialize the JSON string into a Person object using decodeFromString()
  val person = Json.decodeFromString<Person>(jsonString)
  println(person)
}

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The above example will result in the following output:

Person(name=Johnny, age=30)

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