Java 8 Lambda Expressions: Difference between revisions
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An interface with only one method is named ''functional interface'' | An interface with only one method is named ''functional interface'' | ||
<font color=re>Apparently this is the ''type of a lambda expression'', it describe the function signature. | |||
=The Type of a Lambda Expression= | =The Type of a Lambda Expression= | ||
Revision as of 02:16, 28 November 2016
External
- Lambda Expressions Tutorial https://docs.oracle.com/javase/tutorial/java/javaOO/lambdaexpressions.html
Internal
Overview
A lambda expression can be thought of as an anonymous methods. As shown in the "Syntax" section below, a lambda expression looks a lot like a method declaration.
Functional Interface
An interface with only one method is named functional interface
Apparently this is the type of a lambda expression, it describe the function signature.
The Type of a Lambda Expression
TODO
Syntax
A lambda expression consists in a comma-separated list of formal parameters, enclosed in parentheses, followed by the arrow token "->" followed by a body, which may be a single expression or a statement block.
(comma_separated_formal_parameter_list) -> body
Formal Parameters
The type of the parameters may be omitted.
If there is a single parameter, the enclosed parentheses may be omitted.
Body
The body may be a single expression, or a statement block.