Reusability

Tests whether one instance can be used in place of another. Used mostly to compare properties and state of a component to avoid unnecessary updates.

If you imagine a class with 8 fields, equality would compare all 8 fields where as this would typically just compare the ID field, the update-date, or the revision number. You might think of this as a very quick version of equality.

Don't miss Reusability.shouldComponentUpdate which can be applied to a component via ScalaComponent.build#configure.

Since: 0.9.0

Linear Supertypes

AnyVal, Any

Instance Constructors

new Reusability(test: (A, A) ⇒ Boolean)

Value Members

final def !=(arg0: Any): Boolean

Definition Classes
Any
final def ##(): Int

Definition Classes
Any
def &&[B <: A](tryNext: Reusability[B]): Reusability[B]
final def ==(arg0: Any): Boolean

Definition Classes
Any
final def asInstanceOf[T0]: T0

Definition Classes
Any
def contramap[B](f: (B) ⇒ A): Reusability[B]
def getClass(): Class[_ <: AnyVal]

Definition Classes
AnyVal → Any
final def isInstanceOf[T0]: Boolean

Definition Classes
Any
def logNonReusable(show: (A) ⇒ String = _.toString, log: (String) ⇒ Unit = console.warn(_), title: String = "Non-reusability:", fmt: (String, ⇒ String, ⇒ String) ⇒ String = (t, x, y) => s"$t\n- $x\n- $y"): Reusability[A]
def logNonReusable: Reusability[A]
def narrow[B <: A]: Reusability[B]
def reusable(a: A)(implicit c: ClassTag[A]): Reusable[A]
val test: (A, A) ⇒ Boolean
def testNot: (A, A) ⇒ Boolean
def toString(): String

Definition Classes
Any
def ||[B <: A](tryNext: Reusability[B]): Reusability[B]

Related Docs: object Reusability | package react

final class Reusability[A] extends AnyVal

Instance Constructors

new Reusability(test: (A, A) ⇒ Boolean)

Value Members

final def !=(arg0: Any): Boolean

final def ##(): Int

def &&[B <: A](tryNext: Reusability[B]): Reusability[B]

final def ==(arg0: Any): Boolean

final def asInstanceOf[T0]: T0

def contramap[B](f: (B) ⇒ A): Reusability[B]

def getClass(): Class[_ <: AnyVal]

final def isInstanceOf[T0]: Boolean

def logNonReusable(show: (A) ⇒ String = _.toString, log: (String) ⇒ Unit = console.warn(_), title: String = "Non-reusability:", fmt: (String, ⇒ String, ⇒ String) ⇒ String = (t, x, y) => s"$t\n- $x\n- $y"): Reusability[A]

def logNonReusable: Reusability[A]

def narrow[B <: A]: Reusability[B]

def reusable(a: A)(implicit c: ClassTag[A]): Reusable[A]

val test: (A, A) ⇒ Boolean

def testNot: (A, A) ⇒ Boolean

def toString(): String

def ||[B <: A](tryNext: Reusability[B]): Reusability[B]

Inherited from AnyVal

Inherited from Any

Ungrouped