sealed trait Not[T] extends AnyRef
Together with the scala <:<
construct, the Not trait allows us to express that a type is not a subtype of another. This works in the following manner:
Suppose you have types S <: T
and a function foo[T]
that you only want to apply to elements of type T that are not of type S.
Then you can write foo[T](implicit notAnS: Not[S <:<T])
.
TODO: Add an "ambiguous implicit" annotation to make this clearer. My scala version does not currently support this.
- Source
- Not.scala
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final
def
!=(arg0: Any): Boolean
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- AnyRef → Any
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final
def
##(): Int
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- def +(other: String): String
- def ->[B](y: B): (Not[T], B)
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final
def
==(arg0: Any): Boolean
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final
def
asInstanceOf[T0]: T0
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def
clone(): AnyRef
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- @throws( ... )
- def ensuring(cond: (Not[T]) ⇒ Boolean, msg: ⇒ Any): Not[T]
- def ensuring(cond: (Not[T]) ⇒ Boolean): Not[T]
- def ensuring(cond: Boolean, msg: ⇒ Any): Not[T]
- def ensuring(cond: Boolean): Not[T]
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final
def
eq(arg0: AnyRef): Boolean
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def
equals(arg0: Any): Boolean
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def
finalize(): Unit
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- def formatted(fmtstr: String): String
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final
def
getClass(): Class[_]
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def
hashCode(): Int
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final
def
isInstanceOf[T0]: Boolean
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final
def
ne(arg0: AnyRef): Boolean
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final
def
notify(): Unit
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final
def
notifyAll(): Unit
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final
def
synchronized[T0](arg0: ⇒ T0): T0
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def
toString(): String
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def
wait(): Unit
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def
wait(arg0: Long, arg1: Int): Unit
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final
def
wait(arg0: Long): Unit
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- def →[B](y: B): (Not[T], B)