How to use clone()? Summary of clone() instance usage

Java Clone (Clone) is one of the features of the Java language. This article mainly introduces how the Clone mechanism in Java works. Friends who need it can refer to it. Now Clone is no longer a new word, along with " The word "Dolly" was indeed very popular for a while. There is also such a concept in Java, which allows us to easily "make" a copy of an object. Let's take a closer look at Clone in Java. How does the mechanism work? 1. Clone&Copy Suppose there is an Employee object now, Employee tobby =new Employee("CMTobby",5000). Usually we will have such an assignment Employee cindyelf=tobby. At this time, we simply copy the reference. Both cindyelf and tobby point to the memory. Same as

1. Briefly describe the clone() method involved in shallow cloning and deep cloning in Java

##Introduction: Java clone (Clone) is one of the features of the Java language. This article mainly introduces how the Clone mechanism in Java works. Friends who need it can refer to it

2. Detailed explanation of magic method __get() instance (php advanced object-oriented tutorial 2)

Introduction: When you see this name, do you have a very high-end feeling? Yes, magic methods are indeed advanced. So, what is a magic method? In PHP, methods starting with two underscores are called "Magic methods". For example, the __construct(), __destruct (), __clone() mentioned before, and __call(),,__get(), __set(),__sleep(), __wakeup(), __toString(), __autoload(), etc., They are all magic methods.

3. PHP object-oriented - detailed explanation of object cloning clone and magic method __clone()

Introduction: 1. Object clone clone A big shortcoming of PHP4’s object-oriented function is that it treats objects as another data type, which makes many common OOP methods unusable. , such as design patterns. These methods rely on passing objects as references to other class methods, rather than as values, which is PHP's default practice. Fortunately, PHP5 solves this problem and now all objects are treated as references by default. However, since all objects are treated as references rather than values, it is now more difficult to copy objects. If you try to copy a referenced object, this will only happen

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6. Filter the checked data from the dataset come out

Introduction: Solution 1: DataSet dsTemp = new DataSet(); dsTemp = dsDt.Clone(); DataRow[] drs = dsDt.Tables[0].Select(CHECKED='1'); foreach ( DataRow dr i

7. Solve the difference between the two $this in php's __clone() method?

# #Introduction: How to explain the two $this in php's __clone() method? {Code...}

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PHP object Clone clone keyword and __clone() method

##Introduction: PHP object cloning clone keyword and _ _clone() method The clone keyword is used to clone an identical object, and the __clone() method is used to override the original properties and methods. Object cloning Sometimes we need to use two or more identical objects in a project. If you use the new keyword to re-create the object and then assign the same attributes, it is more cumbersome and error-prone. PHP provides an object cloning function, which can completely clone an identical object based on an object...

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[PHP]Object duplication (copy) and __clone() method

Introduction: [PHP]Object Copy (copy) and __clone() method

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