By-name parameters

By-name parameters are defined using the => symbol before the parameter type. Such a parameter will be evaluated only when it is used inside the method's body. You can think of it as syntactic sugar over a zero-parameter function passed to a method.

Visit the following resources to learn more:

• @official@By-name Parameters | Tour of Scala | Scala Documentation
• @article@How to Use By-Name Parameters in Scala | alvinalexander.com
• @article@By-Name Parameters in Scala