Does go language require delet?

Go language does not require delet. One of the reasons why the Go language did not introduce the delete keyword is to maintain the simplicity and consistency of the language. Because one of the design philosophies of the Go language is "keep it simple", the functions and features of the language should be as concise and intuitive as possible. By combining the function of deleting elements with mapped types, the complexity of the language can be reduced and the code can be made cleaner. Easy to read and maintain.

The operating environment of this tutorial: Windows 10 system, go1.20.1 version, Dell G3 computer.

The Go language is a statically typed programming language developed by the Google team and first released in 2012. It aims to provide a high-performance, high-concurrency, easy-to-write programming language. Compared with some other programming languages, Go language has a unique feature, that is, it does not provide the `delete` keyword to delete elements in the map. So why does the Go language not provide the `delete` keyword? This article will explore this issue.

First, let’s take a look at the role of the `delete` keyword in other programming languages. In languages ​​like Python, JavaScript, and C, the `delete` keyword is used to delete a specified variable, object, or an element in memory. This can be very useful in some situations, but it can also cause some problems.

To delete elements in a map in the Go language, you need to use the `delete()` function of the `map` type. This function provides a way to delete a specified key-value pair from the map. One of the reasons why the Go language did not introduce the `delete` keyword is to maintain the simplicity and consistency of the language.

One of the design philosophies of the Go language is to "keep it simple", so the functions and features of the language should be as concise and intuitive as possible. By combining the ability to remove elements with mapped types, Go reduces the complexity of the language and makes the code easier to read and maintain.

In addition, the function of deleting elements can also be achieved with a few simple lines of code. Here is an example:

```go
package main
import "fmt"
func main() {
  m := make(map[string]int)
  
  m["apple"] = 1
  m["banana"] = 2
  m["orange"] = 3
  
  fmt.Println(m)  // 输出：map[apple:1 banana:2 orange:3]
  
  delete(m, "banana")
  
  fmt.Println(m)  // 输出：map[apple:1 orange:3]
}
```

In the above example, we first create a map containing several key-value pairs. Then, the element with the key "banana" is deleted using the `delete()` function. Finally, we print the map and can see that the specified element has been successfully removed.

In this simple and intuitive way, the Go language provides a way to delete mapped elements without introducing additional keywords. Not only does this make the code more concise and easier to understand, it is also consistent with the design principles of the Go language.

To sum up, the reason why the Go language does not provide the `delete` keyword is to maintain the simplicity and consistency of the language. By combining the ability to delete elements with the map type and using the `delete()` function, elements in the map can be deleted in a concise and intuitive way. This design decision makes Go code easier to write, read, and maintain.

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