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# Relation 

### Companion trait Relation

#### object Relation

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### Value Members

1. final def !=(arg0: Any): Boolean
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2. final def ##(): Int
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3. final def ==(arg0: Any): Boolean
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4. final def asInstanceOf[T0]: T0
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5. def clone()
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6. def empty[A, B]: Relation[A, B]

Constructs a new immutable, finite relation that is initially empty.

7. final def eq(arg0: AnyRef): Boolean
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8. def equals(arg0: Any): Boolean
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9. def finalize(): Unit
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10. final def getClass(): Class[_]
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11. def hashCode(): Int
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12. final def isInstanceOf[T0]: Boolean
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13. def make[A, B](forward: Map[A, Set[B]], reverse: Map[B, Set[A]]): Relation[A, B]

Constructs a Relation from underlying `forward` and `reverse` representations, without checking that they are consistent.

Constructs a Relation from underlying `forward` and `reverse` representations, without checking that they are consistent. This is a low-level constructor and the alternatives empty and reconstruct should be preferred.

14. def merge[A, B](rels: Traversable[Relation[A, B]]): Relation[A, B]
15. final def ne(arg0: AnyRef): Boolean
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16. final def notify(): Unit
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17. final def notifyAll(): Unit
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18. def reconstruct[A, B](forward: Map[A, Set[B]]): Relation[A, B]

Constructs a relation such that for every entry `_1 -> _2s` in `forward` and every `_2` in `_2s`, `(_1, _2)` is in the relation.

19. final def synchronized[T0](arg0: ⇒ T0): T0
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20. def toString(): String
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21. final def wait(): Unit
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22. final def wait(arg0: Long, arg1: Int): Unit
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23. final def wait(arg0: Long): Unit
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