Named return parameters are “the values a function returns, with their names defined in the function signature.” By default, Go functions return their values in the defined order. However, with named return parameters, developers can assign names to the returned values, making a function call more explicit and easier to understand. Go does not support … Read more
Here are three ways to capitalize the first letter in Go: Using strings.Title() method Using byte slice Using unicode.ToUpper() method Method 1: Using strings.Title() method Go strings.Title() method is used to capitalize the first letter of each word in a given string. It returns a new string with all the first letters of words in … Read more
In Go, you can “use the strings.Replace() or strings.ReplaceAll() functions” to remove backslash from a string. The difference between these two functions is that strings.Replace() function accepts an additional argument to specify the number of replacements to make, while strings.ReplaceAll() function replaces all occurrences. Method 1: Using the strings.ReplaceAll() function To remove all backslashes (\) … Read more
To convert a map to string in Go, convert a map to JSON “using json.Marshal() method and then convert JSON to JSON string using the string() method.” Using json.Marshal() function and string() method package main import ( “encoding/json” “fmt” ) func main() { data := map[string]string{ “firstName”: “John”, “lastName”: “Doe”, } jsonData, err := json.Marshal(data) … Read more
To convert a Map object to JSON string in Go, you can “use the json.Marshal() function and pass the map object as an argument to the function.” The function returns json string and an error object. Syntax jsonStr, err := json.Marshal(x) Return value If there is any error while converting, an error object will be … Read more
Here is the step-by-step guide to converting struct fields to map in Go: Use the “reflect” package to inspect the struct’s fields. Iterate over the struct’s fields, retrieving the field name and value. Store each field name and value in a map. Example package main import ( “fmt” “reflect” ) type Person struct { Name … Read more
Golang os.Lstat() function is “used to get information about a file, without following symbolic links”. It accepts the name as an argument and returns the fileinfo struct. Syntax func Lstat(name string) (FileInfo, error) Parameters name: It is the file or directory name for which you want to get the information. Return value The Lstat() function returns a FileInfo … Read more
To get the current working directory in Go, use the “os.Getwd()” or “filepath.Abs(‘.’)” function. The current working directory is the directory in which a process starts, and it is usually the directory in which the current program or executable file is located. Method 1: Using the os.Getwd() function The os.Getwd() function is used to “get the … Read more
A type assertion in Golang is “used to provide access to an interface value’s underlying concrete value”. A type assertion does not convert an interface to another data type. Instead, it provides access to the underlying concrete value of the interface. This is normally what you want, as it allows you to work with the … Read more
To check if a string is alphanumeric in Go, you can use the “MustCompile() along with MatchString()” functions or the “IsLetter() along with isDigit()” functions. Method 1: Using MustCompile() along with MatchString() functions The regexp.MustCompile() function in Go is “used to compile a regular expression and returns a Regexp object.” If the regular expression does not … Read more