How to convert case class into string

Question

If I have a case class like below:

case class Student(name: String, activities: Seq[String], grade: String)

And I have a List like this:

val students = List(
      Student("John",List("soccer","Video Games"),"9th"),
      Student("Jane",List("sword fighting","debate"),"10th")
     )

How can I convert the entire thing into a string like below:

johnsoccervideogames9thjaneswordfightingdebate10th

I'd like to take an MD5 has of this string.

@texasbruce overriding toString on a case class just for a one time use seems like a really bad idea... — Luis Miguel Mejía Suárez
– Luis Miguel Mejía Suárez, Commented Aug 5, 2019 at 23:35
@LuisMiguelMejíaSuárez He's not quite clear about his requirement. Don't think he mentioned this is a one time use. — SwiftMango
– SwiftMango, Commented Aug 6, 2019 at 0:45

lukeg · Accepted Answer · 2019-08-05 23:28:11Z

1

This seems to do what you are expecting.

students.map( student => student.name + student.activities.mkString + student.grade).mkString.toLowerCase.replaceAll("\\s", "")

answered Aug 5, 2019 at 23:28

lukeg

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2 Comments

When concatenating large Strings, always use String Interpolator: student => s"${student.name}${student.activities.mkString}${student.grade}".

@LuisMiguelMejíaSuárez Is this possible to do in a sorting as well? stackoverflow.com/questions/57367311/…