Scala null generic

Active 4 years, 1 month ago. Viewed 11k times. Is there any recommendation? Improve this question. Add a comment. Active Oldest Votes. Improve this answer. Rex Kerr Rex Kerr k 26 26 gold badges silver badges bronze badges.

Be careful when wrapping null values in an Option though. If you rely on type inference, you might run into trouble sometimes. For instance, if you do Option null. However, doing Option null: String. There are several ways and your way is one. You could also use: require p! It begs the question though; why not just have a method taking in an Option[String]?

This is why scala is so screwed up language. To me an Option in method signature indicates that the parameter is optional. What if the parameter is not optional and you don't want the caller to pass null or empty call is using Java?

It can be verbose, but it is readable and has advanced well enough these days to be used for distributed programming. Chris Martin Chris Martin Double is primitive. It can't be null. Project: avro4s Author: sksamuel File: GithubIssue ByteArrayOutputStream import com. AnyFunSuite import org. Project: avro4s Author: sksamuel File: Encoding. ByteBuffer import benchmarks. EncoderFactory import org. Project: avro4s Author: sksamuel File: Decoding. Collections import benchmarks.

ByteBufferInputStream import org. Logger import java. ByteArrayOutputStream import scala. GenericRow import org. StructType import org. Schema import cloudflow. Project: stream-reactor Author: lensesio File: AvroSerializer.

BloombergData import com. Record import org. EncoderFactory import scala. Record] list. Map[String, Any]] items. FP Best Seller. How to write a Scala method that takes a simple generic type. Scala 3: Generic type parameters and variance explained. Scala: How to define a generic method parameter that must extend a base type.

Scala 3 opaque types: How to create meaningful type names. Scala 3 modules: How to build modular systems. Docker cheat sheet cheatsheet. The ideal of warriorship is Chogyam Trungpa. Used for the 2nd, 3rd, 4th types, etc. Typically refers to a key in a Java map. Scala collections use A in this situation. Typically refers to a value in a Java map.