trait WeakTypeTag[T] extends Equals with Serializable
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 TypeTag
s 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 TypeTag
s, see the
Reflection Guide: TypeTags
- Annotations
- @implicitNotFound("No WeakTypeTag available for ${T}")
- Source
- TypeTags.scala
- See also
- Alphabetic
- By Inheritance
- WeakTypeTag
- Serializable
- Equals
- AnyRef
- Any
- by any2stringadd
- by StringFormat
- by Ensuring
- by ArrowAssoc
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- Public
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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
- def canEqual(x: Any): Boolean
- Definition Classes
- WeakTypeTag → Equals
- def equals(x: Any): Boolean
- Definition Classes
- WeakTypeTag → Equals → AnyRef → Any
- def hashCode(): Int
- Definition Classes
- WeakTypeTag → AnyRef → Any
- def toString(): String
- Definition Classes
- WeakTypeTag → AnyRef → Any