scala - Filter a list based on two parameters -


i want filter list based on parameter in scala

   case class student(    name:string,    age:int,    subjects:list[subject]   )    case class subject(name:string,id:int)    val sub1=subject("maths",101)   val sub2=subject("science",102)   val sub3=subject("english",103)   val s1=student("abc",20,list(sub1,sub2))   val s2=student("def",30,list(sub3,sub1))   val s3=student("xyz",40,list(sub3,sub2))    val slist=list(s1,s2)   def findsubjectid(slist: list[student], subject:string) {   slist.map(student => student.copy(subjects =     student.subjects.filter(_.name == subject))) }
  1. parameter 1 - subject

  2. parameter 2 - age 20 or 30

    result- should optional

you can try this: 

 slist    .map(student => student.copy(      subjects = student.subjects        .filter(_.name == subject)))    .filter(student => student.age == 20 || student.age == 30)

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