Detailed introduction about +=

This article mainly introduces the in-depth study of += and -= in C#. This article in-depth studies what += and -= do during execution to deepen the understanding and use of C# delegates. Friends in need Can you refer to what I wrote earlier about why you suddenly want to talk about delegation? The reason started from the idea of ​​a colleague. I was thinking about this problem on my way to get off work yesterday. If I register multiple methods for delegation, will they all be executed? In order to explore the nature, I made a demo to study it. += Everyone knows that delegates inherit from System.MulticastDelegate, and System.MulticastDelegate inherits from System.Delegate. You can register multiple methods for delegates through +=. So have they all been implemented? What is the result of execution? Are the results the same if there is a return value and if there is no return value? Then try to talk about what += has done? The test code is as follows: namespace Wolfy.DelegateDemo { public del

1. Detailed introduction about -=

##Introduction: This article mainly introduces the in-depth study of += and -= of delegation in C#. This article in-depth studies what += and -= do during execution to deepen the understanding and use of C# delegation. What is needed Friends, you can refer to what I wrote before. Why do you suddenly want to talk about delegation? The reason started from the idea of ​​a colleague. I was thinking about this problem on the way to get off work yesterday. If I register multiple methods for the delegation, will they all be executed? In order to explore the nature, I made a demo to study it. +=Everyone knows that delegates inherit from System.MulticastDelegate, and Syst...

2. Summary of the example tutorial of String class in Java

Introduction: Because we need to summarize all aspects involved in the String class here, we also give some SCJP questions. If there are any shortcomings, please tell me in the comments, thank you. 1. Immutable mode: The value of a string object cannot be changed after it is created. String str1=hello;//Create an object hello, which will not change; System.out.println(str1);str1+= world!;//Two string objects are sticky, the system actually creates a new object, and S

3. In-depth explanation of += and -= of delegation in C

Introduction: This article mainly introduces the in-depth study of += and -= in delegation in C#. This article in-depth studies what += and -= do during execution to deepen the understanding of C# delegation. Friends who need it can refer to

4. Summary of frequently asked questions for Java beginners (collection)

#Introduction: This article introduces some questions frequently asked by Java beginners. Many friends are interested in whether % can be divided by a decimal? Is there any difference in the effects of a += b and a = a + b? Why does declaring an array take so much time? Why does the Java library not use random pivot quick sort? If you have doubts about a series of questions, let me give you a detailed introduction through this article

5. Detailed introduction to the summary of common problems in Java programming

#Introduction: I write Java programs every day. In fact, there are some details in it that you may not pay much attention to. No, someone summarized one of our programming problems. Frequently Asked Questions. Although it's generally not a big problem, it's best not to do this. In addition, many of the problems mentioned here can actually be checked out by Findbugs (http://findbugs.sourceforge.net/). String concatenation misuse and incorrect writing: String s = ''; for (Person p : persons) { s += ', ' ..

6. Android Program Students learn PHP development (9)-Assignment comparison logical operation-PhpStorm

Introduction: Assignment operator symbols: =, +=, -=, *=, /=, %=, .= Comparison operator symbols: >, <, ==, >=, <=, ===, !=, !== Logical operators and or &&, or or ||, not or!, xor xor Different is true, the same Output a message for false die() and exit the current script

7. Detailed explanation of whether the expressions i += x and i = i + x in Python are equivalent

Introduction: This article mainly introduces the expressions i += x and i = i + in Python The relevant information on whether x is equivalent is introduced in detail through sample code. I believe it has certain reference value for everyone. Friends in need can take a look below.

8. Is the Python expression i += x equivalent to i = i + x?

Introduction: Is the Python expression i += x equivalent to i = i + x? If your answer is yes, then congratulations, you are 50% correct. Why do you say it is only half correct? According to our general understanding, they are equivalent. There are no similarities or differences between the two when it comes to integer operations, but is it the same for list operations? First look at the following two pieces of code:

9. C# Learning Diary 24----Event

Introduction: Events provide classes and class instances with the ability to send notifications to the outside world, realizing communication between objects. If an event member is defined , indicating that the type has 1. The ability to register methods in events (+= operator implementation). 2. Ability to unregister methods in events (-= operator implementation). 3. The registered method will be notified when the event is triggered (the event maintains a list of registered methods internally). Delegation is the carrier of events. To define an event, you must have a delegate. For more information about delegation, please click Delegate to learn more.

10. Detailed examples of connectors (+, +=) in Python

Introduction: You can use + to connect strings in Python. I believe everyone knows this. In fact, the connector in Python also has +=. The following article mainly introduces the string connection in Python. Connectors (+, +=), friends in need can refer to them, let’s take a look below.

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