value

Read the value from a TVar.

import arrow.fx.stm.TVar
import arrow.fx.stm.atomically

suspend fun main() {
  //sampleStart
  val tvar = TVar.new(10)
  val result = atomically {
    tvar.value
  }
  //sampleEnd
  println(result)
}

This comes with a few guarantees:

• Any given TVar is only ever read once during a transaction.

• When committing the transaction the value read has to be equal to the current value otherwise the transaction will retry