How Can I Pretty Print Variables in Go?

Pretty Printing Variables in Go

Ruby's awesome_print function provides a convenient way to format and print variables. However, Go does not have a built-in equivalent. So, let's explore a couple of alternatives.

Using Printf:

The Printf function takes a format string as its first argument. By specifying the #v format for the variable, you can print its value in a human-readable format.

x := map[string]int{"a": 1, "b": 2}
fmt.Printf("%#v", x)

This will print the following output:

map[string]int{"a":1,"b":2}

However, this format does not provide indentation or line breaks.

Using json.MarshalIndent:

To obtain a more visually appealing format, you can use json.MarshalIndent. This function takes a value as input and returns its JSON representation with customizable indentation and line breaks.

x := map[string]interface{}{"a": 1, "b": 2}
b, err := json.MarshalIndent(x, "", "  ")
if err != nil {
    fmt.Println("error:", err)
}
fmt.Print(string(b))

This will print the following output:

{
    "a": 1,
    "b": 2
}

json.MarshalIndent is a suitable alternative to awesome_print for pretty printing variables in Go. It allows for customization of the indentation and line breaks, resulting in a visually pleasing output.

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