How to use constants in Golang
What is a Constant or Const in Golang? Here's what you need to know about using constants in Go.
Anonymous Functions in Golang
Anonymous functions in Go are very useful. Here is the syntax, usage and example of using anonymous functions in Golang .
An anonymous function is a function that has no name. It is useful when you want to create an inline function. In Go, anonymous functions can also form a closure. Anonymous functions are also called function literals.
For example:
package main
import "fmt"
func main() {
// Hàm ẩn danh
func() {
fmt.Println("Welcome! to Quantrimang.com")
}()
}
Result:
Welcome! to Quantrimang.comSyntax:
func(parameter_list)(return_type) {
// code..
// Dùng lệnh return nếu return_type được đưa ra
// nếu return_type không được cung cấp, thì không
// dùng lệnh return
return
}()Assign a variable
You can assign an anonymous function to a variable. This variable can then be called like a regular function.
package main
import "fmt"
func main() {
// Gán một hàm ẩn danh cho một biến
value := func() {
fmt.Println("Welcome! to Quantrimang.com")
}
value()
}
Result:
Welcome! to Quantrimang.comPass as argument
You can also pass an anonymous function as an argument to another function.
package main
import "fmt"
// Chuyển hàm ẩn danh làm đối số
func GFG(i func(p, q string) string) {
fmt.Println(i("Geeks", "for"))
}
func main() {
value := func(p, q string) string {
return p + q + "Geeks"
}
GFG(value)
}
Result:
GeeksforGeeksReturn anonymous function
You can return an anonymous function from another function.
package main
import "fmt"
// Trả về hàm ẩn danh
func GFG() func(i, j string) string {
myf := func(i, j string) string {
return i + j + "GeeksforGeeks"
}
return myf
}
func main() {
value := GFG()
fmt.Println(value("Welcome ", "to "))
}
Result:
Welcome to GeeksforGeeksConclude
Anonymous functions in Golang are very flexible and powerful. They can be used to create inline functions, closures, and even to pass and return functions. Understanding how to use them effectively can greatly improve your programming skills in Go.
Volatile functions in Golang
Variadic functions in Go allow you to pass a variable number of arguments to a function. Here's everything you need to know about variadic functions in Golang.
Named return parameters in Golang
In Golang, named return parameters are often referred to as named parameters. Golang allows naming the return parameters or results of functions in the function signature or definition.
Keywords in Go
Keyword - Keywords are words in a language that are used for some internal processes or represent some predefined actions. Here is what you need to know about keywords in Golang.
Data types in Golang
Data types specify what type of data a valid Go variable can hold. In the Go language, types are divided into four categories as follows:
Function arguments in Golang
Go supports two main ways to pass arguments: Pass by Value and Pass by Reference. Go uses pass by value by default.
Function returning multiple values in Golang
In Go language, you are allowed to return multiple values from a function, using the return statement. In other words, in a function, a return statement can return multiple values.
Switch Statement in Go
Golang like most other programming languages has switch statement. Here is how to use switch statement in Golang.
Cases to know when using selection statements in Golang
In this article, we will learn how to use default case to avoid deadlock. But first, we will learn what is deadlock case when using select command in Golang?
Anonymous structures and fields in Golang
Anonymous structs in Golang are temporary structures with no names used for one-time purposes, while anonymous fields allow embedding of unnamed fields.
How to use Rune in Golang
What is Rune in Golang? How to use Rune in Golang? This article will give you the answer.
How to use operators in Golang
Operators allow us to perform different types of operations on operands. In Go language, operators can be classified based on their different functions.
Void identifier in Golang
_(underscore) in Golang is called Blank Identifier. Identifier is a user-defined name of program elements used for identification purposes.
How to create basic program in Golang
Hello, World! is the first basic program in any programming language. You can write this first program in Golang by following the steps below.
How to Install Go on Windows
Golang can be easily installed on Windows. Here is a step-by-step guide to install Golang on Windows.
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