Since Java 8 the JDK has a Stream API. Among numerous other operations the Stream API offers two operations – reduce() and collect() – which are occasionally misunderstood and thus used incorrectly – at the expense of introducing subtle bugs in conjunction with parallel streams.
Lambda expressions and the streams API add a more functional style of programming to Java; something developers have not really had in the past. The session starts with a short summary of the key features of both Lambda expressions and streams before moving on to some real world examples of …
Java 8 was launched in March 2014 with great fanfare. The new lambda syntax allows us to have a more succinct coding style and get rid of a lot of boilerplate code. However, there is also confusion. Even the “State of the Lambdas” paper starts by comparing lambdas to ActionListener.
How many times have been told how functional programming is so much better than imperative, and then being presented with a functional approach to calculating a fibonacci sequence, leaving you wondering how that can be even remotely useful when working in real world applications? Yep, we’ve all been there. It …
Rxjava is a library for composing asynchronous and event-based programs using observable sequences for the Java VM that supports Java 6+, Clojure, Scala, Groovy, JRuby and Java 8 lambdas.
Functional programming style is gaining popularity. Though Groovy is not a functional programming language, writing in functional style is common and idiomatic in Groovy. While you have used these features in Groovy, learning the tents of functional programming will help you recognized these and make better use of them in …
