> ## Documentation Index
> Fetch the complete documentation index at: https://starkware-9575960b-agent-options.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# core::starknet::event::EventEmitter

A trait for emitting Starknet events.

## Signature

```rust
pub trait EventEmitter
```

## Examples

```rust
#[derive(Drop, starknet::Event)]
pub struct NewOwner {
    pub new_owner: ContractAddress,
}

fn emit_event(ref self: ContractState, new_owner: ContractAddress) {
    self.emit(NewOwner { new_owner });
}
```

## Trait functions

### emit

Emits an event.

#### Signature

```rust
fn emit>(ref self: T, event: S)
```