//arrow-fx-stm/arrow.fx.stm/STM/tryPut

tryPut

common open fun <A> TMVar<A>.tryPut(a: A): Boolean

Same as TMVar.put except that it returns true or false if was successful or it retried.

import arrow.fx.stm.TMVar
import arrow.fx.stm.atomically

suspend fun main() {
  //sampleStart
  val tmvar = TMVar.new(20)
  val result = atomically {
    tmvar.tryPut(30)
  }
  //sampleEnd
  println("Result $result")
  println("New value ${atomically { tmvar.tryTake() } }")
}

This function never retries.

See also

common

   
arrow.fx.stm.STM for a function that retries if the TMVar is not empty.

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