xring

When using lambda in a Maven based project in IntelliJ IDEA, got

idea lambda expressions are not supported in -source 1.5

solved by add this in pom file:

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
 maven-compiler-plugin

xring

case class Person1(name: String, age: Int, other: Option[String])
case class Person2(name: String, age: Int, other: String)

import play.api.libs.functional.syntax._
import play.api.libs.json._

implicit val person1Format = (
  (JsPath \ "name").format[String] and
    (JsPath \ "age").format[Int] and
    (JsPath \ "other").formatNullable[String].inmap[Option[String]](x => Some(x.getOrElse("default")), y => y)