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Go is an open source programming language that makes it easy to build simple, reliable, and efficient software. Go is expressive, concise, clean, and efficient. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel type system enables flexible and modular program construction. Go compiles quickly to machine code yet has the convenience of garbage collection and the power of run-time reflection. It’s a fast, statically typed, compiled language that feels like a dynamically typed, interpreted language.
To copy an array into another array in Golang, you can use the built-in “copy()” function. However, arrays have a fixed length, and if you want to copy arrays with different sizes, consider using slices. Example 1 package main import “fmt” func main() { // Declare and initialize an array sourceArray := [5]int{1, 2, 3, … Read more
To convert a string to a rune in Golang, you can use the “type conversion”. A rune is an alias for the int32 type and represents a Unicode code point. Syntax []rune(s) Example package main import ( “fmt” ) func main() { // Define a string s := “Hi, Golang!” // Convert the string to … Read more
To convert a string to float in Go, you can use the “strconv.ParseFloat()” function. The string.ParseFloat() method “accepts decimal and hexadecimal floating-point number syntax”. If the string is well-formed and near a valid floating-point number, the “ParseFloat()” function returns the nearest floating-point number rounded using IEEE754 unbiased rounding. Syntax func ParseFloat(s string, bitSize int) (float64, … Read more
You can convert JSON data to CSV using the “encoding/json” and “encoding/csv” packages. First, you will need to unmarshal the JSON data into a suitable data structure (like a slice of structs or a slice of maps), and then you can write that data to a CSV file using the csv.Writer type. Example package main … Read more
The scope of a variable in Go refers to the part of the code where the variable is accessible. Variables can have different scopes depending on where they are declared. Block scope A variable declared within a block (e.g., inside a function, loop, or conditional statement) has a block scope. Therefore, it is accessible only … Read more
Golang variables are explicitly declared and used by the compiler to check the type-correctness of function calls. Variable is the name given to the memory location to store the value of a particular type. There are numerous syntaxes to declare variables in go. A variable is a storage location with a particular type and an … Read more
What is Encryption Encryption is the process of converting the plaintext to ciphertext. In simpler terms, encryption takes readable data and alters it to appear random. Encryption requires an encryption key: a set of mathematical values that both the sender and the receiver of the encrypted message know. If you have seen the movie Imitation … Read more
To make HTTP requests in Go, you can use the “net/http” package from the standard library. Making GET requests To make a GET request, you can use the “http.Get” function. The function takes a URL as an argument and returns an HTTP response and an error. Example package main import ( “fmt” “io/ioutil” “log” “net/http” … Read more
Go command-line flags can be handled using the “flag” package, which allows you to parse and define command-line arguments and flags easily. Example package main import ( “flag” “fmt” ) func main() { // Define flags name := flag.String(“name”, “Krunal Lathiya”, “Your name”) age := flag.Int(“age”, 30, “Your age”) active := flag.Bool(“active”, true, “Are you active?”) … Read more
