内容简介：As of PHP 8, we'll be able to use attributes. The goal of these attributes, also known as annotations in many other languages, is to add meta data to classes, methods, variables and what not; in a structured way.The concept of attributes isn't new at all,
Attributes in PHP 8
As of PHP 8, we'll be able to use attributes. The goal of these attributes, also known as annotations in many other languages, is to add meta data to classes, methods, variables and what not; in a structured way.
The concept of attributes isn't new at all, we've been using docblocks to simulate their behaviour for years now. With the addition of attributes though, we now have a first-class citizen in the language to represent this kind of meta data, instead of having to manually parse docblocks.
So what do they look like? How do we make custom attributes? Are there any caveats? Those are the questions that will be answered in this post. Let's dive in!
First things first, here's what attribute would look like in the wild:
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PYTHON3:数据分析与机器学习实战
龙马高新教育 / 北京大学出版社 / 2018-9-1 / 69.00
机器学习(Machine Learning, ML)是一门多领域交叉学科，是人工智能的核心，其应用遍及人工智能的各个领域，专门研究计算机怎样模拟或实现人类的学习行为，以获取新的知识或技能，重新组织已有的知识结构使之不断改善自身的性能。在机器学习过程中，需要使用大量数据，而数据分析是指用适当的方法对收集的大量数据进行分析，提取有用信息并形成结论，进而对数据加以详细研究和概括总结的过程。本书结合机器学......一起来看看 《PYTHON3:数据分析与机器学习实战》 这本书的介绍吧!
