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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.
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10 min readTo get the last element of a slice in Golang, you can use the indexing feature. Here is how you can accomplish it:Identify the slice from which you want to extract the last element. Use the indexing notation with the length of the slice minus one to access the last element. lastElement := slice[len(slice)-1] Here, len(slice) returns the length of the slice, and subtracting one gives you the index position of the last element.
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8 min readTo get the current directory in Golang, you can use the os package. Specifically, you can utilize the Getwd function from the os package. Here's an explanation of how to get the current directory:Import the os package: Start by importing the os package into your Golang code. Make sure to include the following line at the beginning of your file: import "os" Use the Getwd function: To get the current working directory, call the Getwd function from the os package.
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6 min readTo get a hostname in Golang, you can use the os package and call the Hostnmae function. Below is an example code snippet that demonstrates how to achieve this: package main import ( "fmt" "os" ) func main() { hostname, err := os.Hostname() if err != nil { fmt.Println("Error:", err) return } fmt.Println("Hostname:", hostname) } In this code, os.Hostname() returns two values: the hostname and any potential errors.
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7 min readTo get a timestamp in Golang, you can use the following steps:Import the time package in your code: import "time" Use the Now() function from the time package to get the current time: currentTime := time.Now() If you want to format the timestamp in a specific way, you can use the Format() method. It takes a layout argument that describes the format and returns the formatted time: formattedTime := currentTime.Format("2006-01-02 15:04:05") In the layout, the numbers (e.g.
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8 min readTo generate a UUID (Universally Unique Identifier) in Golang, you can use the github.com/google/uuid package, which provides a simple way to create UUIDs.First, you need to import the uuid package into your Go file by using the import statement: import "github.com/google/uuid" Then, you can call the New() method of the UUID package to generate a new UUID. The returned value will be a new UUID instance representing a random UUID.
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7 min readWhen programming in Go, formatting time involves using the built-in time package which provides functions to manipulate and format time values. Here are some commonly used options for formatting time in Go:The Format function: This function is used to format a time.Time value into a string according to a layout. The layout string: A layout string is a reference for formatting the time value in a desired way.
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8 min readTo format a string in Golang, you can use the fmt.Sprintf function. This function allows you to create formatted strings by using placeholders and providing the corresponding values.Here's a basic example of how to format a string in Golang: package main import "fmt" func main() { name := "John" age := 25 formattedString := fmt.Sprintf("My name is %s and I am %d years old.", name, age) fmt.