The following column will introduce you to the understanding of methods in Go language from the Golang Tutorial column. I hope it will be helpful to friends in need!
go method
Definition
Methods are those with special receiver parameters Function, that is, the method receiver between func and the method name.
func (s Student) GetName() string {
return s.name}func (s *Student) SetName(name string) {
s.name = name}We can call member methods whose receiver type is a pointer called pointer methods, and member methods whose receiver type is non-pointer called value methods.
When you need to modify the object, you must use a pointer (pass by reference), otherwise just declare the type as a literal (pass by value). Also avoid copying the value on every method call.
type Integer intfunc (a *Integer) Increase(i Integer) {
*a = *a + i}func main() {
var a Integer = 2
var b Integer = 2
//a.Increase(b)
//(&a).Increase(b)
(*Integer).Increase(&a, b)
fmt.Println(a)}This method does not belong to the Integer class, but to the pointer type pointing to Integer. When we call the method, the reason why we can call the Increase method directly on an instance is because the Go language compilation phase will automatically Convert a into the corresponding pointer type &a, so the actual calling code is (&a).Increase(b).
is actually syntax sugar
type A struct {
name string}func (a A) Name() string {
a.name = "Hi! " + a.name return a.name}func main() {
a := A{name: "test"}
fmt.Println(a.Name())
fmt.Println(A.Name(a))}a.Name() is actually the syntax of A.Name(a) Sugar, variable a is the so-called method receiver.
func NameOfA(a A) string {
a.name = "Hi! " + a.name return a.name}func main() {
t1 := reflect.TypeOf(A.Name)
t2 := reflect.TypeOf(NameOfA)
fmt.Println(t1 == t2)// true}The function type in the go language is only related to parameters and return values, so the equality of these two types can prove that the method is essentially an ordinary function, and the receiver is the implicit first parameter.
The above is the detailed content of Detailed explanation of methods in Go language. For more information, please follow other related articles on the PHP Chinese website!
Choosing Between Golang and Python: The Right Fit for Your ProjectApr 19, 2025 am 12:21 AMGolangisidealforperformance-criticalapplicationsandconcurrentprogramming,whilePythonexcelsindatascience,rapidprototyping,andversatility.1)Forhigh-performanceneeds,chooseGolangduetoitsefficiencyandconcurrencyfeatures.2)Fordata-drivenprojects,Pythonisp
Golang: Concurrency and Performance in ActionApr 19, 2025 am 12:20 AMGolang achieves efficient concurrency through goroutine and channel: 1.goroutine is a lightweight thread, started with the go keyword; 2.channel is used for secure communication between goroutines to avoid race conditions; 3. The usage example shows basic and advanced usage; 4. Common errors include deadlocks and data competition, which can be detected by gorun-race; 5. Performance optimization suggests reducing the use of channel, reasonably setting the number of goroutines, and using sync.Pool to manage memory.
Golang vs. Python: Which Language Should You Learn?Apr 19, 2025 am 12:20 AMGolang is more suitable for system programming and high concurrency applications, while Python is more suitable for data science and rapid development. 1) Golang is developed by Google, statically typing, emphasizing simplicity and efficiency, and is suitable for high concurrency scenarios. 2) Python is created by Guidovan Rossum, dynamically typed, concise syntax, wide application, suitable for beginners and data processing.
Golang vs. Python: Performance and ScalabilityApr 19, 2025 am 12:18 AMGolang is better than Python in terms of performance and scalability. 1) Golang's compilation-type characteristics and efficient concurrency model make it perform well in high concurrency scenarios. 2) Python, as an interpreted language, executes slowly, but can optimize performance through tools such as Cython.
Golang vs. Other Languages: A ComparisonApr 19, 2025 am 12:11 AMGo language has unique advantages in concurrent programming, performance, learning curve, etc.: 1. Concurrent programming is realized through goroutine and channel, which is lightweight and efficient. 2. The compilation speed is fast and the operation performance is close to that of C language. 3. The grammar is concise, the learning curve is smooth, and the ecosystem is rich.
Golang and Python: Understanding the DifferencesApr 18, 2025 am 12:21 AMThe main differences between Golang and Python are concurrency models, type systems, performance and execution speed. 1. Golang uses the CSP model, which is suitable for high concurrent tasks; Python relies on multi-threading and GIL, which is suitable for I/O-intensive tasks. 2. Golang is a static type, and Python is a dynamic type. 3. Golang compiled language execution speed is fast, and Python interpreted language development is fast.
Golang vs. C : Assessing the Speed DifferenceApr 18, 2025 am 12:20 AMGolang is usually slower than C, but Golang has more advantages in concurrent programming and development efficiency: 1) Golang's garbage collection and concurrency model makes it perform well in high concurrency scenarios; 2) C obtains higher performance through manual memory management and hardware optimization, but has higher development complexity.
Golang: A Key Language for Cloud Computing and DevOpsApr 18, 2025 am 12:18 AMGolang is widely used in cloud computing and DevOps, and its advantages lie in simplicity, efficiency and concurrent programming capabilities. 1) In cloud computing, Golang efficiently handles concurrent requests through goroutine and channel mechanisms. 2) In DevOps, Golang's fast compilation and cross-platform features make it the first choice for automation tools.
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
AI Hentai Generator
Generate AI Hentai for free.
Hot Article
Hot Tools
Dreamweaver Mac version
Visual web development tools
mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),
SublimeText3 Chinese version
Chinese version, very easy to use
WebStorm Mac version
Useful JavaScript development tools
MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.
