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gogo-swagger

What't the means about var () in golang

I go though the code generated by go-swagger, found follow code:

// NewReceiveLearningLabActsParams creates a new ReceiveLearningLabActsParams object
// with the default values initialized.
func NewReceiveLearningLabActsParams() ReceiveLearningLabActsParams {
    var ()
    return ReceiveLearningLabActsParams{}
}

I noticed here:

var ()

I totally not understand what's the means, could anyone help me understand this code? thanks

Solution

  • In Go this is a shorthand for defining variables in bulk. Instead of having to write var in front of every variable declaration, you can use a var declaration block.

    For example:

    var (
    a,b,c string = "this ", "is ","it "
    e,f,g int = 1, 2, 3
)

    is the same as

    var a,b,c string = "this ", "is ","it "
var d,e,f int = 1, 2, 3

    The var () in your code example simply states that no variables were declared.

    Refer to the official Go documentation for more information.