scalalistbuffer

Scala check if a ListBuffer[MyType] contains one element

I have two class:

class Item(val description: String, val id: String) 

class ItemList {
  private var items : ListBuffer[Item] = ListBuffer()
}

How can I check if items contain one item with description=x and id=y?

Solution

  • That would be

    list.exists(item => item.description == x && item.id == y)

    If you also implement equals for your class (or even better, make it a case class which does that automatically), you can simplify that to

    case class Item(description: String, id: String)
 // automatically everything a val, 
 // you get equals(), hashCode(), toString(), copy() for free
 // you don't need to say "new" to make instances

list.contains(Item(x,y))