extension name meaning

extension methods enable you to "add" methods to an existing type without creating a new derived type, recompiling, or otherwise modifying the original type. an extension method is a special static method, but it can be called just like an instance

In swift, extension is somewhat similar to the category of objective-c, but extension is more powerful and flexible than category, and it can extend not only the method of a certain type or struct, It can also be used in conjunction with protocol,

Analysis of C # extension method, In the process of project development using object-oriented language, many will use the "inheritance" feature, but not all scenarios are suitable for the "inheritance" feature, some basic principles of the design

In the process of using object-oriented language for project development, more use of the "inheritance" feature, but not all scenarios are appropriate to use the "inheritance" feature, in some of the basic principles of design patterns are also

In the process of project development using object-oriented language, more "inheritance" features are used, but not all scenarios are suitable for the use of "inheritance" features, and some of the basic principles of design patterns are also

One, what is deferred environment variable extension? Delay variable Full name "Delay environment variable extension", to understand this thing, we have to understand what is called variable expansion!When we explain our command, CMD will first

For the set in the shell and the use of eval:Set position parameters (same as command line script)The role of Eval is to describe the second time[Email protected]:/home/xpg# set--Hello Shanghai Liangge [email protected]:/home/xpg# eval echo \$$

In Microsoft's standard Linq, there is no DistinctBy extension or ForEach extension, but these two functions are often used in daily work. In theory, microsoft should include these two extensions in Linq. But why not? In this article, I will talk

In the Microsoft Standard LINQ, there is no distinctby extension and foreach extension, but in peacetime use of these two features are often used in the work, in the sense that Microsoft should include these two extensions in LINQ, but in fact why

The meaning of directory and file permissions in Linux The meaning of file permission R: You can read the specific contents of this document; W: You can edit the contents of this file, including adding the details of the deleted file; X: The