Posts (page 282)
-
8 min readTo check if a string variable is empty or contains only whitespaces in Go, you can use the strings.TrimSpace() function. Here's how you can do it: package main import ( "fmt" "strings" ) func main() { str := " " // Example string containing only whitespace // Removing leading and trailing whitespaces trimmedStr := strings.TrimSpace(str) if trimmedStr == "" { fmt.Println("String is empty or contains only whitespaces") } else { fmt.
-
6 min readGolang modules can be found in multiple places, including but not limited to:Official Go Module Mirror (https://proxy.golang.org): This is the default module proxy for Go. It acts as a central repository and proxy for Go modules. It provides a reliable source for finding Go modules. GitHub: Many Go packages and modules are hosted on GitHub.
-
7 min readTo generate a random uint32 in Go, you can utilize the rand package. Here's an example code snippet: package main import ( "fmt" "math/rand" "time" ) func main() { // Generate a new seed for random number generation rand.Seed(time.Now().UnixNano()) // Generate a random uint32 randomNum := rand.Uint32() // Output the generated random number fmt.
-
12 min readTo initialize a nested array of structs in Go, you need to follow the syntax and correct initialization pattern. Here's how you can do it:Define the struct type: First, you need to define the struct type that will be used to create the nested array. For example, let's say you have a struct called Person with two fields Name and Age: type Person struct { Name string Age int } Declare the nested array: Create a variable with the desired array structure.
-
9 min readTo download files from an FTP server using Golang, you can follow these steps:Import the necessary packages: import ( "fmt" "net/http" "io" "os" ) Establish an FTP connection using net/http package: response, err := http.Get("ftp://:@/") if err != nil { fmt.Println("Error connecting to FTP server:", err) return } defer response.Body.Close() Open a new file to store the downloaded file: file, err := os.Create("") if err != nil { fmt.
-
12 min readBuilding Go modules in Docker involves creating a Dockerfile that specifies the required dependencies, setting up the Go environment, and building the Go program within the container. Here's a step-by-step guide on how to accomplish this:Create a new Dockerfile for your Go project. This file will define the Docker image and its configuration. You can use any text editor to create this file. Specify the base image on which you want to build your Go project.
-
6 min readTo get an IP address from socket.io in Golang, you can follow these steps:First, establish a connection with the socket.io server using a Golang library like gorilla/websocket.Once the connection is established, you will receive a http.Request object as a parameter in the Upgrade method of the websocket library.Access the remote IP address from the http.Request object by calling the RemoteAddr() method. This will return a net.Addr object.To get the IP address from the net.
-
9 min readTo reuse a MongoDB connection in Go, you can follow these steps:Import the necessary MongoDB packages in your Go code: import ( "context" "log" "time" "go.mongodb.org/mongo-driver/mongo" "go.mongodb.org/mongo-driver/mongo/options" ) Create a MongoDB client instance that will be used to establish a connection: func createMongoClient() (*mongo.
-
8 min readTo remove white spaces in Go, you can use the "strings" package along with regular expressions. The steps to remove white spaces are as follows:Import the necessary packages: import ( "strings" "regexp" ) Use the regexp.MustCompile function to create a regular expression pattern to match white spaces: pattern := regexp.
-
9 min readIn Go, you can import files from the current directory by specifying a relative path to the file you want to import. Here are the steps:Create a Go source file in the current directory where you want to import other files.At the beginning of the file, use the package directive to define the package name.Use the import keyword followed by the relative path to the file you want to import. If the file is in the same directory, simply provide the filename without any path.
-
9 min readCreating a shared queue in Go involves using synchronization mechanisms provided by the language to ensure safe access and modification of the queue by multiple goroutines. Here is a step-by-step explanation of how to create a shared queue in Go:Define a struct for the queue: Create a struct that represents the shared queue, which will hold the necessary data fields. For example, you can define a struct with a slice to hold the elements and other fields like the size, head, tail, etc.
-
9 min readTo convert a GMT date to Unix time in Golang, you can follow the steps below:First, you need to parse the GMT date string into a time.Time object using the time.Parse() function. The Parse() function takes two parameters: a layout string specifying the date format and the GMT date string to be parsed. The layout string should be based on the reference time "Mon Jan 2 15:04:05 MST 2006".