Blade's Logs

Scala School - Advanced types implicit def strToInt(x: String) = x.toInt A view bound specifies a type that can be “viewed as” another. This makes sense for an operation that needs to “read” an object but doesn’t modify the object. Implicit functions allow automatic conversion they allow on-demand function application when this can help satisfy type inference This says that A has to be “viewable” as Int . , given our previous implicit, we can relax the constraint to viewa...

Singleton instance of akka actor per actor system | Anand's blog Akka does provide Cluster Singleton to create a singleton instance of an actor in a clustered environment. Akka extensions has two basic components namely Extensions and ExtensionId. Extensions are loaded only once per actor system. ExtensionId is needed to get the instance of our extension. Scala's Stackable Trait Pattern val queue = (new BasicIntQueue  | with Filtering with Incrementing) Scala with keyword usage - Stack Overflow ...

Streaming in Spark, Flink, and Kafka - DZone Big Data that every record will be processed exactly once, thereby eliminating any duplicates that might be available. Kafka Building real-time streaming data pipelines that reliably get data between systems or applications. Building real-time streaming applications that transform or react to the streams of data. the interchange of signals between cellphone towers financial transactions cars in motion emitting GPS signals ...

The DataCommand Posted from Diigo . The rest of my favorite links are here .

sql - PostgreSQL - query from bash script as database user 'postgres' - Stack Overflow Posted from Diigo . The rest of my favorite links are here .

이것은 테스트용입니다.

CryptoMigration25 - 2.5.x play.crypto.aes.transformation Posted from Diigo . The rest of my favorite links are here .