> Aztec.nr API reference, v6.0.0 (mainnet and testnet). Index: https://docs.aztec.network/aztec-nr-api/v6.0.0/llms.txt

# Struct TxEffectArrayLengths

Module: `protocol_types::blob_data`

```rust
pub struct TxEffectArrayLengths {
    pub note_hashes: u32,
    pub nullifiers: u32,
    pub l2_to_l1_msgs: u32,
    pub public_data_writes: u32,
    pub private_logs: u32,
    pub contract_class_logs: u32,
}
```

## Fields

```rust
note_hashes: u32
```

```rust
nullifiers: u32
```

```rust
l2_to_l1_msgs: u32
```

```rust
public_data_writes: u32
```

```rust
private_logs: u32
```

```rust
contract_class_logs: u32
```