Is there an existing cached computed property patt...

# announcements

[shama]

Is there an existing cached computed property pattern in Kotlin? For example:

var firstName: String = "Charlie"
var lastName: String = "Brown"
val fullName: String by lazy {
  "$firstName $lastName"
}
println(fullName) // Charlie Brown

firstName = "Snoopy"
// Let "fullName" know it will need to recompute the next time it is accessed
println(fullName) // Snoopy Brown

I’m currently going down writing my own ReadWriteProperty for it but wondering if there is an existing pattern for this already? Thanks!

[Adam Powell]

compose has this:

var firstName by mutableStateOf("Charlie")
var lastName by mutableStateOf("Brown")
val fullName by derivedStateOf { "$firstName $lastName" }

[shama]

Thanks! I’ll check that out.