---
title: Usage
description: "Build a greeter and call it."
section: extras
order: 10
---
# Usage

## Call it

A `demo.Greeter` greets by name:

```go src=modules/demo/demo_test.go#greet
g := Greeter{Name: "blog"}
got := g.Greet()
```

See [Greet someone](../guide/start.md#greet-someone).