Introduction to Go Lang:
The open-source programming language Go Lang was developed by Google in 2007. It is a statically-composed, ordered language that is intended to be capable, clear, and easy to remember. Go Lang is well-known for its lightning-fast execution speed, integrated concurrency capabilities, and strong emphasis on simplicity.
Setting up the Environment:
Before we can start writing Go programs, we need to set up our environment. We can download the Go Lang compiler and tools from the official website (https://golang.org/). Once we have downloaded and installed Go, we can create a new file with the extension ".go" and write our first Go program.
Syntax:
package main
import "fmt"
func main() {
fmt.Println("Hello, World!")
}
Data Types used in GO:
Commonly used data types in Go Lang are:
Integer types: int, int8, int16, int32, int64, uint, uint8, uint16, uint32, uint64, uintptr.
Floating-point types: float32, float64.
Complex types: complex64, complex128.
Boolean type: bool.
String type: string.
Array type: [n]T, where n is the number of elements and T is the element type.
Slice type: []T, where T is the element type.
Map type: map[K]V, where K is the key type and V is the value type.
Pointer type: T, where T is the type of the pointed-to value.
**Struct type:* struct{}.
Interface type: interface{}.
Function type: func(). These are just a few examples of commonly used data types in Go Lang. Go Lang also provides additional types such as byte, rune, error, channel, and time.
Control Structures:
Go Lang provides several control structures that are used to manage the flow of execution in a program. Here are some commonly used control structures in Go Lang:
if/else statements: Used to execute code based on a condition. The if statement executes a block of code if a condition is true. The else statement executes a block of code if the condition is false.
switch statements: Used to evaluate a variable or expression against a list of possible values. The switch statement executes the block of code that matches the value of the variable or expression.
for loops: Used to execute a block of code repeatedly. The for loop allows you to specify a condition to determine how many times the loop should execute.
break and continue statements: Used to control the flow of a loop. The break statement terminates the loop immediately, while the continue statement skips the current iteration of the loop.
defer statements: Used to schedule a function call to be executed after the surrounding function returns. Defer statements are often used to perform cleanup tasks, such as closing files or releasing resources.
goto statements: Used to transfer control to a labeled statement elsewhere in the code. However, the use of goto statements is generally discouraged in Go Lang, and it is recommended to use other control structures instead.
Top comments (0)