Posts (page 279)
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3 min readIn Golang, you can get the current year using the time package. Here's an example of how to achieve this: package main import ( "fmt" "time" ) func main() { currentYear := time.Now().Year() fmt.Println("Current Year:", currentYear) } In this code, the time.Now() function returns the current time, and Year() extracts the year from it. Finally, fmt.Println() is used to print the current year.
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8 min readTo get yesterday's date in Golang, you can use the time package. Here's the code snippet to achieve this: package main import ( "fmt" "time" ) func main() { // Get the current date and time currentTime := time.Now() // Subtract 24 hours to get yesterday's date yesterday := currentTime.Add(-24 * time.Hour) // Format the date in the desired format formattedDate := yesterday.Format("2006-01-02") fmt.
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8 min readParsing YAML in Golang is relatively straightforward. Here is an example of how you can do it:First, you need to import the necessary packages: import ( "fmt" "io/ioutil" "log" "gopkg.in/yaml.v2" ) Next, you can create a struct that matches the structure of your YAML file.
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6 min readTo print double quotes in Golang, you can use the escape sequence \" inside a string. Here is an example: package main import "fmt" func main() { fmt.Println("This is a double quote: \"") } In this code snippet, the backslash (\) before the double quote (") is the escape character, which tells the Go compiler to treat the subsequent double quote as a literal character.
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8 min readTo get query parameters in Golang, you can use the net/http package. Here is an example of how you can accomplish this:Import the necessary packages: import ( "net/http" "log" ) Create a HTTP handler function: func myHandler(w http.ResponseWriter, r *http.Request) { // Parse the query parameters query := r.URL.Query() // Access individual query parameters param1 := query.Get("param1") param2 := query.
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14 min readTo implement a queue in Golang, you can make use of the built-in data structure called a slice. Here's a basic implementation:Create a struct to represent the queue: type Queue struct { items []interface{} } Initialize an instance of the queue: q := Queue{} Implement the basic operations for a queue: a. Enqueue (add an item to the end of the queue): func (q *Queue) Enqueue(item interface{}) { q.items = append(q.items, item) } b.
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11 min readIn Golang, maps are an unordered collection of key-value pairs. However, if you want to sort a map by its keys, you can follow these steps:Create a slice to hold the keys of the map.Iterate over the map using a for loop and append each key to the slice.Sort the slice in ascending order using the sort package's Slice() function and passing it the slice of keys.Create a new map to store the sorted key-value pairs.
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7 min readTo generate a random number in Golang, you can use the rand package in the standard library. Here's how you can do it:First, import the math/rand package in your Go program. import ( "math/rand" ) Seed the random number generator using the rand.Seed() function. This is typically done once at the start of your program or when you want to ensure different random number sequences for each run. If you don't explicitly seed the generator, it will use a default seed value. rand.
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9 min readTo uninstall Golang in Kali Linux, you can follow these steps:Open the terminal by clicking on the terminal icon in the desktop or pressing Ctrl+Alt+T. Use the following command to navigate to the Go installation directory: cd /usr/local/go Remove all the installed Go files and directories using the command: sudo rm -rf * Remove the Go binaries path from the environment variables by opening the .bashrc file using a text editor. For example, you can use nano: nano ~/.
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12 min readTo use Kafka in Golang, you can follow the steps below:Install the Kafka Go library: Start by installing the Kafka Go library using the following command: go get github.com/segmentio/kafka-go Import the necessary packages: In your Go code, import the required packages for Kafka operations: import ( "github.com/segmentio/kafka-go" "context" "fmt" ) Create a producer: To create a producer, you need to specify the Kafka broker addresses and topic name.
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12 min readTo mock an HTTP client in Golang, you can follow these steps:Define an interface: Start by defining an interface that represents the methods you want to mock from the http.Client package. For example, you could create an interface called HTTPClient with methods like Get, Post, Do, etc. Implement the interface: Create a struct that implements the HTTPClient interface.
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7 min readTo render HTML in Golang, you can follow these steps:Import the necessary packages: import ( "fmt" "net/http" "html/template" ) Create a handler function to handle the HTTP request and response: func handler(w http.ResponseWriter, r *http.Request) { // Render the HTML template tmpl, err := template.ParseFiles("template.html") if err != nil { fmt.