DelayedInit
scala.DelayedInit
traitDelayedInit
Classes and objects (but note, not traits) inheriting theDelayedInit marker trait will have their initialization code rewritten as follows:code becomesdelayedInit(code).
Initialization code comprises all statements and all value definitions that are executed during initialization.
Example:
trait Helper extends DelayedInit { def delayedInit(body: => Unit) = { println("dummy text, printed before initialization of C") body // evaluates the initialization code of C }}class C extends Helper { println("this is the initialization code of C")}object Test extends App { val c = new C}Should result in the following being printed:
dummy text, printed before initialization of Cthis is the initialization code of CAttributes
- See also
"Delayed Initialization" subsection of the Scala Language Specification (section 5.1)
- Deprecated
[Since version 2.11.0]DelayedInit semantics can be surprising. Support for `App` will continue. See the release notes for more details: https://github.com/scala/scala/releases/tag/v2.11.0- Source
- DelayedInit.scala
- Graph
- Supertypes
- Known subtypes
- traitApp
Members list
Value members
Abstract methods
Attributes
- Source
- DelayedInit.scala
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