Java - Lambdas: Difference between revisions
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==Syntax== | ==Syntax== | ||
<source lang="java"> | <source lang="java"> | ||
(String first, String second) -> Integer.compare(first.length(), second.length()) | (String first, String second) -> Integer.compare(first.length(), second.length()) | ||
<source/> | <source/> | ||
==Declaration== | ==Declaration== | ||
==Use== | ==Use== | ||
Revision as of 15:27, 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
