Created
January 15, 2013 03:49
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scalaz employee monoid
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| import scalaz.Monoid | |
| case class EmpMonoid(e:Set[Employee]) extends Monoid[Employee] { | |
| override val zero:Employee = Employee(0,0,0,"emp0") | |
| override def append(a:Employee, b: =>Employee):Employee = { | |
| if(a.age > b.age) a else | |
| if(b.age > a.age) b else | |
| if(a.tenure > b.tenure) a else | |
| if(b.tenure > a.tenure) b else | |
| if (a.salary > b.salary) b else | |
| if(b.salary > a.salary) a else | |
| if( math.random > 0.5) a else b | |
| } | |
| val theUnluckyOne:Employee = e.foldLeft(zero)((a:Employee, b:Employee)=>append(a,b)) | |
| } | |
| scala> EmpMonoid( empDB.toSet).theUnluckyOne | |
| res12: Employee = Employee(35,6,85079,emp7435) | |
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