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

# Function splice_at_count

Module: `noir_aztec::protocol::utils::arrays`

```rust
pub fn splice_at_count<T, let N: u32>(
    array1: [T; N],
    count: u32,
    array2: [T; N],
) -> [T; N]
where
    T: Eq
```

Splices two fixed-size arrays at `count`.

The result consists of:

- the first `count` elements from `array1`, followed by
- the first `N - count` elements from `array2`, producing a new array of length `N`.

In other words:

- `result[0..count] == array1[0..count]`
- `result[count..N] == array2[0..(N - count)]`

Note: This function does not consider any notion of "used length". It always copies exactly `N - count` elements from `array2`. If `array2` has fewer meaningful items than that, elements from its higher indices (typically padding) will be included in the result. Callers must ensure that `count` correctly reflects the intended splice point and that no meaningful elements are truncated.