Java - Lambdas: Difference between revisions
From My Limbic Wiki
(→Syntax) |
|||
Line 2: | Line 2: | ||
==Syntax== | ==Syntax== | ||
<source lang="java"> | <source lang="java"> | ||
(String first, String second) | (String first, String second) -> Integer.compare(first.length(), second.length()) | ||
</source> | </source> | ||
Revision as of 15:28, 18 October 2019
Lambdas
Syntax
<source lang="java">
(String first, String second) -> Integer.compare(first.length(), second.length())
</source>
Declaration
Use
Use Functional Interfaces https://docs.oracle.com/javase/8/docs/api/java/lang/FunctionalInterface.html They have only one method
Questions & Answers
concrete methods interface methode default implementee = interface fonctionnelle
- if a class implements two interfaces with the same name method: multiplicatedefaulterror
je ne peux utiliser que les variables finales dans une lambda expression lambda n'est pas thread safe
Loops
INTERNAL: nouveau foreach ==> je ne veux pas savoir ce ton implementation: fais le avec la lambda que je te donne EXTERNAL: ancien foreach, a BANNIR