c# to golang

C# is a very popular object-oriented programming language commonly used for the development of Windows desktop applications. Golang is an open source programming language developed by Google and is widely used in high-performance distributed web application development. This article will introduce how to convert C# code to Golang code and explore the similarities and differences between the two languages.

Syntactic differences between C# and Golang

In C#, the definition of a class usually starts with the "class" keyword, followed by the class name and the class body surrounded by braces. In Golang, a type can be represented as a structure (struct) or interface (interface), or it can be a function.

The following is an example of a C# class definition:

class MyClass 
{
    private string name;  
    private int age;  

    public MyClass(string name, int age)  
    {  
        this.name = name;  
        this.age = age;  
    }  

    public void Print() 
    {  
        Console.WriteLine("Name: " + name);  
        Console.WriteLine("Age: " + age);  
    }  
}

Accordingly, in Golang, you can use the keyword "struct" to define a type and surround the type members with curly braces. The following is an example of Golang's structure definition:

type MyClass struct {
    name string
    age  int
}

func (m *MyClass) Print() {
    fmt.Println("Name: ", m.name)
    fmt.Println("Age: ", m.age)
}

Notice that Golang's method definition is different from C#'s method definition. In Golang, the definition of a method must be preceded by a receiver (i.e. the method caller) to identify the type to which the method belongs.

Definition of variables and constants

In C#, the definition of variables usually requires specifying the type of the variable first, for example:

int i = 5;
string s = "hello";

In Golang, the type of the variable can be based on Its initial value is automatically inferred. For example:

i := 5
s := "hello"

Golang also supports declaring and initializing multiple variables, such as:

var a, b int = 1, 2

Similarly, the definition of constants is also different. In C#, constants need to be defined using the keyword "const":

const double Pi = 3.14159;

In Golang, constants are defined using the keyword "const":

const Pi float64 = 3.14159

Differences in string operations

Strings are expressed in the same way in C# and Golang, using double quotes to enclose character sequences. However, the two differ in string operations. In C#, string processing is very convenient and flexible. You can use the string concatenation character " " to splice two strings:

string s1 = "hello";
string s2 = "world";
string s3 = s1 + s2;

In Golang, it is illegal to use the plus sign to connect strings. , need to use " " to replace "fmt.Sprintf". For example:

s1 := "hello"
s2 := "world"
s3 := fmt.Sprintf("%s%s", s1, s2)

Exception handling

In C#, exception handling can be implemented using try-catch statement blocks. For example:

try
{
    // 一些异常可能会发生
}
catch (Exception ex)
{
    // 在catch代码块中处理异常
}

In Golang, exception handling is completed by returning an error (error) value. For example:

func SomeFunction() error {
    // 一些异常可能会发生
}

if err := SomeFunction(); err != nil {
    // 处理错误
}

Summary

This article briefly describes some basic differences between C# and Golang, and how to convert C# code to Golang code. Although the design ideas of these two languages ​​are different, they both have their own advantages and uses. I believe that by in-depth understanding of the differences between these languages, we can better choose the programming language that suits our use cases and improve the quality and efficiency of the code.

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