play.api.data.validation

Constraint

object Constraint extends Serializable

This object provides helpers for creating Constraint values.

For example:

val negative = Constraint[Int] {
case i if i < 0 => Valid
case _ => Invalid("Must be a negative number.")
}
Source
Validation.scala
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  1. final def !=(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef
  2. final def !=(arg0: Any): Boolean

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  3. final def ##(): Int

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  4. final def ==(arg0: AnyRef): Boolean

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  5. final def ==(arg0: Any): Boolean

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  6. def apply[T](name: String, args: Any*)(f: (T) ⇒ ValidationResult): Constraint[T]

    Creates a new named constraint from a validation function.

    Creates a new named constraint from a validation function.

    name

    the constraint name

    args

    the constraint arguments, used to format the constraint name

    f

    the validation function

    returns

    a constraint

  7. def apply[T](f: (T) ⇒ ValidationResult): Constraint[T]

    Creates a new anonymous constraint from a validation function.

    Creates a new anonymous constraint from a validation function.

    f

    the validation function

    returns

    a constraint

  8. final def asInstanceOf[T0]: T0

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  9. def clone(): AnyRef

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    protected[java.lang]
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    @throws( ... )
  10. final def eq(arg0: AnyRef): Boolean

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  11. def equals(arg0: Any): Boolean

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  12. def finalize(): Unit

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    @throws( classOf[java.lang.Throwable] )
  13. final def getClass(): Class[_]

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  14. def hashCode(): Int

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  15. final def isInstanceOf[T0]: Boolean

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  16. final def ne(arg0: AnyRef): Boolean

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  17. final def notify(): Unit

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  18. final def notifyAll(): Unit

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  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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