How Can I Set Default Values for Go Struct Fields?

Customizing Default Values in Go Structs

In Go, structs provide a convenient mechanism for grouping related data, but initializing them with default values can be a source of confusion. Various approaches exist for this purpose. One common technique is to create a dedicated constructor function that initializes each field with a specific default value.

Using a Constructor Function

Consider the following example:

type Something struct {
    Text string
    DefaultText string
}

func NewSomething(text string) Something {
    something := Something{}
    something.Text = text
    something.DefaultText = "default text"
    return something
}

In this code, the NewSomething() function takes a text parameter and creates a new Something struct. It explicitly sets the Text field to the given value and provides a default value ("default text") for the DefaultText field. This constructor function allows you to initialize new instances of the Something struct with custom default values as needed.

The above is the detailed content of How Can I Set Default Values for Go Struct Fields?. For more information, please follow other related articles on the PHP Chinese website!