Packages

trait All extends Read with Write with Schema with Transactional

The bottom type of all standard effects. It is used by the DBIO and StreamingDBIO type aliases instead of Nothing because the compiler does not properly infer Nothing where needed. You can still introduce your own custom effect types but they will not be used by DBIO and StreamingDBIO, so you either have to define your own type aliases or spell out the proper DBIOAction types in type annotations.

Source
Effect.scala
Linear Supertypes
Type Hierarchy
Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. All
  2. Transactional
  3. Schema
  4. Write
  5. Read
  6. Effect
  7. AnyRef
  8. Any
Implicitly
  1. by any2stringadd
  2. by StringFormat
  3. by Ensuring
  4. by ArrowAssoc
  1. Hide All
  2. Show All
Visibility
  1. Public
  2. Protected