我与Scalaz验证工作的清单,我碰到这样的情况下(注意,这在很大程度上从我的实际代码的简化,但这个想法是一样的) 考虑: case class Foo(bar: Int)
val x1: Validation[String, Foo] = Foo(1).success
val x2: Validation[String, Foo] = Foo(2).success
val x3: Val
鉴于以下Person SQL和型号代码: SQL CREATE TYPE sex AS ENUM ('male', 'female');
CREATE TABLE person (
id bigserial primary key,
name varchar(100) NOT NULL,
age integer NOT NULL,
gender sex N