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 Golang 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. The type of the returned values is similar to the type of the parameter specified in the parameter list.
Syntax:
func function_name(parameter_list)(return_type_list){
// code...
}In there:
- function_name : This is the name of the function.
- parameter-list : Contains the names and types of the function parameters.
- return_type_list : Optional and contains the types of values that the function returns. If you are using return_type in your function, then you need to use the return statement in your function.
For example:
// Chương trình Go minh họa
// cách hàm trả về nhiều giá trị
package main
import "fmt"
// myfunc trả về 3 giá trị của kiểu int
func myfunc(p, q int)(int, int, int ){
return p - q, p * q, p + q
}
// Phương thức chính
func main() {
// Giá trị trả về được gắn vào
// 3 biến khác nhau
var myvar1, myvar2, myvar3 = myfunc(4, 2)
// Hiện giá trị
fmt.Printf("Result is: %d", myvar1 )
fmt.Printf("\nResult is: %d", myvar2)
fmt.Printf("\nResult is: %d", myvar3)
}
Result:
Result is: 2
Result is: 8
Result is: 6Name the return value
In Go language, you are allowed to provide names for return values. And you can also use those variable names in your code. There is no need to write these names with return statement because Go compiler will automatically understand that these variables should be retained. And the return type is called minimal return. Minimal return reduces duplication in your program.
Syntax:
func function_name(para1, para2 int)(name1 int, name2 int){
// code...
}
hoặc
func function_name(para1, para2 int)(name1, name2 int){
// code...
}Here, name1 and name2 are the names of the return value and para1 and para2 are the parameters of the function.
For example:
// Minh họa chương trình Go
// cách đặt tên cho giá trị trả về
package main
import "fmt"
// myfunc trả về 2 giá trị của kiểu int
// đây là tên giá trị trả về:
// rectangle và square
func myfunc(p, q int)( rectangle int, square int ){
rectangle = p*q
square = p*p
return
}
func main() {
// Giá trị trả về được gán cho
// hai biến khác nhau
var area1, area2 = myfunc(2, 4)
// Hiện giá trị
fmt.Printf("Area of the rectangle is: %d", area1 )
fmt.Printf("\nArea of the square is: %d", area2)
}
Result:
Area of the rectangle is: 8
Area of the square is: 4Switch Statement in Go
Golang like most other programming languages has switch statement. Here is how to use switch statement in Golang.
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.
Functions in Go
In Go, functions are blocks of code that perform specific tasks, which can be reused throughout the program to save memory, improve readability, and save time.
How to use variables in Golang
In Go language, Identifier can be a variable name, function name, constant, statement label, package name or type. Here is what you need to know about using Identifier in Golang.
How to regain access to hard drive, fix error of not being able to open hard drive
In this article, we will guide you how to regain access to your hard drive when it fails. Let's follow along!
How to use dental floss
Dental floss is a common tool for cleaning teeth, however, not everyone knows how to use it properly. Below are instructions on how to use dental floss to clean teeth effectively.
How to gain muscle according to experts
Building muscle takes time and the right training, but its something anyone can do. Heres how to build muscle, according to experts.
The Best Diets for Heart Health
In addition to regular exercise and not smoking, diet is one of the best ways to protect your heart. Here are the best diets for heart health.
How to cure insomnia for pregnant women in the last 3 months
The third trimester is often the most difficult time to sleep during pregnancy. Here are some ways to treat insomnia in the third trimester.
Scientifically Proven Ways to Automatically Burn Calories
There are many ways to lose weight without changing anything in your diet. Here are some scientifically proven automatic weight loss or calorie-burning methods that anyone can use.
All about iOS 26
Apple has introduced iOS 26 – a major update with a brand new frosted glass design, smarter experiences, and improvements to familiar apps.
Yoga exercises to treat insomnia
Yoga can provide many health benefits, including better sleep. Because yoga can be relaxing and restorative, its a great way to beat insomnia after a busy day.
What is the flower of the other shore? Meaning and legend of the flower of the other shore
The flower of the other shore is a unique flower, carrying many unique meanings. So what is the flower of the other shore, is the flower of the other shore real, what is the meaning and legend of the flower of the other shore?
Healthy snacks that help you lose weight
Craving for snacks but afraid of gaining weight? Dont worry, lets explore together many types of weight loss snacks that are high in fiber, low in calories without making you try to starve yourself.
What to do when you have trouble sleeping?
Prioritizing a consistent sleep schedule and evening routine can help improve the quality of your sleep. Heres what you need to know to stop tossing and turning at night.
How to add a printer to Windows 10
Adding a printer to Windows 10 is simple, although the process for wired devices will be different than for wireless devices.
The most commonly deficient nutrients in the diet
Diet is important to our health. Yet most of our meals are lacking in these six important nutrients.
How to get beautiful nails quickly
You want to have a beautiful, shiny, healthy nail quickly. The simple tips for beautiful nails below will be useful for you.
The best laptops for students in 2025
Students need a specific type of laptop for their studies. It should not only be powerful enough to perform well in their chosen major, but also compact and light enough to carry around all day.