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executed on created

every time when we create SumInt object, function will store in memory? even we didn't call sumNumber

you can image that field sumNumber has a backfield, its value is computed on SumInt created by executing sum

okk thanks

did you want sum function called every time when you call get on sumNumber?

yes i want only when i called sumNumber

if you want it to be calculated everytime

val sumNumber get() = sum(firstNumber, secondNumber)

or if you want it to be calculated the first time it is accessed which the value is then stored

val sumNumber by lazy { sum(firstNumber, secondNumber) }

thanks a million 👍

👍