What is variable declaration in Go?

What is variable declaration in Go?

In Go, variable declaration is the process of defining a variable's name and type. You can declare a variable using the var keyword, or by using the short declaration operator :=.

Can you show me an example of variable declaration?

Sure! Here's an example:

var x int = 10

This declares a variable x of type int and initializes it with the value 10.

What is the difference between var and :=?

The var keyword allows you to declare a variable with an explicit type, while := infers the type from the assigned value. For example:

var y float64 = 20.5
z := 30.5 // z is inferred as float64

Can I declare multiple variables at once?

Yes, you can declare multiple variables in one line using commas. For example:

var a, b, c int = 1, 2, 3