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This article mainly introduces the java laziness assessment of how to achieve the relevant knowledge, the content is detailed and easy to understand, the operation is simple and fast, has a certain reference value, I believe that everyone after reading this java laziness assessment how to achieve the article will have a harvest, let's take a look.

Description

1. Lazy evaluation is the process of delaying the evaluation of expressions until they are needed. Java is a strict immediate assignment evaluation.

2. It can be rewritten as a version of deferred evaluation using lambda expressions and higher-order functions.

Example

Public class LazySample {public static void main (String [] args) {/ / this is a lambda expression, represented by the closure UnaryOperator add = t-> {System.out.println ("executing add"); return t + t;}; / / this is an lambda expression, represented by the closure UnaryOperator multiply = t-> {System.out.println ("executing multiply") Return t * t;}; / / pass Lambda closures instead of ordinary functions System.out.println (addOrMultiply (true, add, multiply, 4); System.out.println (addOrMultiply (false, add, multiply, 4)) } / / this is a higher order function static R addOrMultiply (boolean add, Function onAdd, Function onMultiply, T t) {/ / Java? Will be lazy to evaluate expressions, so only execute the required method return (add? OnAdd.apply (t): onMultiply.apply (t);}} this is the end of the article on "how to achieve java laziness Assessment". Thank you for reading! I believe that everyone has a certain understanding of the knowledge of "how to achieve java laziness assessment". If you want to learn more knowledge, you are welcome to follow the industry information channel.

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