vertx / io.vertx.reactivex.core.shareddata / AsyncMap / rxReplaceIfPresent
rxReplaceIfPresent
open fun rxReplaceIfPresent(k: K, oldValue: V, newValue: V): Single<Boolean>
Replace the entry only if it is currently mapped to a specific value
Parameters
k - the key
oldValue - the existing value
newValue - the new value
Return