**`Type`** is the base interface for all data types in Go. This means that all other data types (such as `int`, `float`, or `string`) implement the Type interface. `Type` is defined in the `reflect` header.

The following is the `Type` interface:

```go
type Type interface {
    // Underlying returns the underlying type of a type.
    Underlying() Type

    // String returns a string representation of a type.
    String() string
}
```

# Use

Since it is implemented by all data types in Go, `Type` can be used to extract information relating to the type for any and all data types.

A function that returns `Type` returns the data type of the object it receives.

# Code

package main

import "fmt"
import "reflect"

func learnType(t reflect.Type) string {
	if t != nil {
		return "Has a type!"
	}
	return "<nil>"
}

func main(){
    age := 10
    name := "Ben"
    height := 123.5

    fmt.Printf("The type of name is: %T\n", name)
    fmt.Printf("The type of age is: %T\n", age)
    fmt.Printf("The type of height is: %T\n", height)

   fmt.Print(learnType(reflect.TypeOf(age)))
}

In the above example, we declare two variables. These variables are a `string`, `float`, and an `int`. Using the `%T` format specifier, we extract the type of each variable.

Next, we define a function `learnType()` that takes the type of a variable and prints whether or not the object has a valid type.

>`Note:` Uninitialized variables have a default value of `nil` in Go.

What is the Type type in Golang?

Type in Go is a base interface implemented by all data types, enabling type reflection and information extraction.