tryPut

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

for a function that retries if the TMVar is not empty.