WeakTypeTag

If an implicit value of type WeakTypeTag[T] is required, the compiler will create one, and the reflective representation of T can be accessed via the tpe field. Components of T can be references to type parameters or abstract types. Note that WeakTypeTag makes an effort to be as concrete as possible, i.e. if TypeTags are available for the referenced type arguments or abstract types, they are used to embed the concrete types into the WeakTypeTag. Otherwise the WeakTypeTag will contain a reference to an abstract type. This behavior can be useful, when one expects T to be perhaps be partially abstract, but requires special care to handle this case. However, if T is expected to be fully known, use scala.reflect.api.TypeTags#TypeTag instead, which statically guarantees this property.

For more information about TypeTags, see the Reflection Guide: TypeTags

Annotations: @implicitNotFound( "No WeakTypeTag available for ${T}" )
Source: TypeTags.scala
See also: scala.reflect.api.TypeTags

Linear Supertypes

Serializable, java.io.Serializable, Equals, AnyRef, Any

Known Subclasses

TypeTag

Type Hierarchy Learn more about scaladoc diagrams

Abstract Value Members

abstract def in[U <: Universe with Singleton](otherMirror: Mirror[U]): in.U.WeakTypeTag[T]

Migrates the expression into another mirror, jumping into a different universe if necessary.
Migrates the expression into another mirror, jumping into a different universe if necessary.
Migration means that all symbolic references to classes/objects/packages in the expression will be re-resolved within the new mirror (typically using that mirror's classloader).
abstract val mirror: Universe.Mirror

The underlying Mirror of this type tag.
abstract def tpe: Universe.Type

Reflective representation of type T.

Concrete Value Members

final def !=(arg0: Any): Boolean

Definition Classes
AnyRef → Any
final def ##(): Int

Definition Classes
AnyRef → Any
def +(other: String): String

Implicit information
This member is added by an implicit conversion from Universe.WeakTypeTag[T] to any2stringadd[Universe.WeakTypeTag[T]] performed by method any2stringadd in scala.Predef.
Definition Classes
any2stringadd
def ->[B](y: B): (Universe.WeakTypeTag[T], B)

Implicit information
This member is added by an implicit conversion from Universe.WeakTypeTag[T] to ArrowAssoc[Universe.WeakTypeTag[T]] performed by method ArrowAssoc in scala.Predef.
Definition Classes
ArrowAssoc
Annotations
@inline()
final def ==(arg0: Any): Boolean

Definition Classes
AnyRef → Any
final def asInstanceOf[T0]: T0

Definition Classes
Any
def canEqual(x: Any): Boolean

Definition Classes
WeakTypeTag → Equals
def clone(): AnyRef

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( ... )
def ensuring(cond: (Universe.WeakTypeTag[T]) ⇒ Boolean, msg: ⇒ Any): Universe.WeakTypeTag[T]

Implicit information
This member is added by an implicit conversion from Universe.WeakTypeTag[T] to Ensuring[Universe.WeakTypeTag[T]] performed by method Ensuring in scala.Predef.
Definition Classes
Ensuring
def ensuring(cond: (Universe.WeakTypeTag[T]) ⇒ Boolean): Universe.WeakTypeTag[T]

Implicit information
This member is added by an implicit conversion from Universe.WeakTypeTag[T] to Ensuring[Universe.WeakTypeTag[T]] performed by method Ensuring in scala.Predef.
Definition Classes
Ensuring
def ensuring(cond: Boolean, msg: ⇒ Any): Universe.WeakTypeTag[T]

Implicit information
This member is added by an implicit conversion from Universe.WeakTypeTag[T] to Ensuring[Universe.WeakTypeTag[T]] performed by method Ensuring in scala.Predef.
Definition Classes
Ensuring
def ensuring(cond: Boolean): Universe.WeakTypeTag[T]

Implicit information
This member is added by an implicit conversion from Universe.WeakTypeTag[T] to Ensuring[Universe.WeakTypeTag[T]] performed by method Ensuring in scala.Predef.
Definition Classes
Ensuring
final def eq(arg0: AnyRef): Boolean

Definition Classes
AnyRef
def equals(x: Any): Boolean

Definition Classes
WeakTypeTag → Equals → AnyRef → Any
def finalize(): Unit

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( classOf[java.lang.Throwable] )
def formatted(fmtstr: String): String

Implicit information
This member is added by an implicit conversion from Universe.WeakTypeTag[T] to StringFormat[Universe.WeakTypeTag[T]] performed by method StringFormat in scala.Predef.
Definition Classes
StringFormat
Annotations
@inline()
final def getClass(): Class[_]

Definition Classes
AnyRef → Any
def hashCode(): Int

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

Definition Classes
Any
final def ne(arg0: AnyRef): Boolean

Definition Classes
AnyRef
final def notify(): Unit

Definition Classes
AnyRef
final def notifyAll(): Unit

Definition Classes
AnyRef
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
def toString(): String

Definition Classes
WeakTypeTag → AnyRef → Any
final def wait(): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long, arg1: Int): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
def →[B](y: B): (Universe.WeakTypeTag[T], B)

Implicit information
This member is added by an implicit conversion from Universe.WeakTypeTag[T] to ArrowAssoc[Universe.WeakTypeTag[T]] performed by method ArrowAssoc in scala.Predef.
Definition Classes
ArrowAssoc

trait WeakTypeTag[T] extends Equals with Serializable

Abstract Value Members

abstract def in[U <: Universe with Singleton](otherMirror: Mirror[U]): in.U.WeakTypeTag[T]

abstract val mirror: Universe.Mirror

abstract def tpe: Universe.Type

Concrete Value Members

final def !=(arg0: Any): Boolean

final def ##(): Int

def +(other: String): String

def ->[B](y: B): (Universe.WeakTypeTag[T], B)

final def ==(arg0: Any): Boolean

final def asInstanceOf[T0]: T0

def canEqual(x: Any): Boolean

def clone(): AnyRef

def ensuring(cond: (Universe.WeakTypeTag[T]) ⇒ Boolean, msg: ⇒ Any): Universe.WeakTypeTag[T]

def ensuring(cond: (Universe.WeakTypeTag[T]) ⇒ Boolean): Universe.WeakTypeTag[T]

def ensuring(cond: Boolean, msg: ⇒ Any): Universe.WeakTypeTag[T]

def ensuring(cond: Boolean): Universe.WeakTypeTag[T]

final def eq(arg0: AnyRef): Boolean

def equals(x: Any): Boolean

def finalize(): Unit

def formatted(fmtstr: String): String

final def getClass(): Class[_]

def hashCode(): Int

final def isInstanceOf[T0]: Boolean

final def ne(arg0: AnyRef): Boolean

final def notify(): Unit

final def notifyAll(): Unit

final def synchronized[T0](arg0: ⇒ T0): T0

def toString(): String

final def wait(): Unit

final def wait(arg0: Long, arg1: Int): Unit

final def wait(arg0: Long): Unit

def →[B](y: B): (Universe.WeakTypeTag[T], B)

Inherited from Serializable

Inherited from java.io.Serializable

Inherited from Equals

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion any2stringadd from Universe.WeakTypeTag[T] to any2stringadd[Universe.WeakTypeTag[T]]

Inherited by implicit conversion StringFormat from Universe.WeakTypeTag[T] to StringFormat[Universe.WeakTypeTag[T]]

Inherited by implicit conversion Ensuring from Universe.WeakTypeTag[T] to Ensuring[Universe.WeakTypeTag[T]]

Inherited by implicit conversion ArrowAssoc from Universe.WeakTypeTag[T] to ArrowAssoc[Universe.WeakTypeTag[T]]

Ungrouped