## IndexerAtom.(constructor)

Constructs a new instance of the `IndexerAtom` class

**Signature:**

```typescript
constructor(left: Atom, expr: Atom);
```

## Parameters

| Parameter | Type | Description |
| --- | --- | --- |
| left | [Atom](/content/docs/sdk/core.atom) |  |
| expr | [Atom](/content/docs/sdk/core.atom) |  |