extension number 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

APK extension file introduction, functions and usage, apk ExtensionAPK extension file Introduction The maximum size of each APK file in the Android Market (Google Play Store) is 50 MB. If your program contains a large number of data files, you can

Binary negative Number:The original code is the original representation methodAnti-code is the inverse of the sign bit (highest bit)Complement = anti-code +1 1 bytes It can only represent 256 numbers anyway, because there is a sign, so we're going

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 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