My body is ready More on reddit.com

// peek: debug streams without changes
peek(e -> System.out.println(e)).
// map: convert every element into something
map(e -> e.hashCode()).

Consider this instead?

// peek: debug streams without changes
peek(System.out::println).
// map: convert every element into something
map(String::hashCode).

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Putting a number on the amount of lines a class should have is something I disagree with. Your class should hold enough code that it implements what you think the class would do. I have seen some programs where people try to get fancy and go way overboard with base classes and interfaces for no real reason. A class with 100+ lines of code is a lot easier to understand than a system where you have to dig through multiple layers of base classes and inheritance to figure out the general idea. More on reddit.com

This image only contains half the patterns. If you want to see all the patterns: http://www.celinio.net/techblog/?p=65 More on reddit.com