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Scala Programming Projects
book

Scala Programming Projects

by Mikael Valot, Nicolas Jorand
September 2018
Intermediate to advanced
398 pages
9h 43m
English
Packt Publishing
Content preview from Scala Programming Projects

Implicit conversion

An implicit conversion converts a source type to a target type. This allows you to do the following:

  • Use methods of the target type as if they were declared on the source type
  • Pass the source type as an argument in functions that accept the target type

For instance, we could treat the String type as if it were LocalDate using the following code:

import java.time.LocalDateimplicit def stringToLocalDate(s: String): LocalDate = LocalDate.parse(s)

Note that IntelliJ highlights a yellow warning Advanced language feature: implicit conversion on the implicit keyword.

If you want to get rid of this warning, you can position the cursor on the implicit keyword, then press Alt + Enter, and choose to Enable implicit conversion

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Publisher Resources

ISBN: 9781788397643