> ## Documentation Index
> Fetch the complete documentation index at: https://docs.starknet.io/llms.txt
> Use this file to discover all available pages before exploring further.

# core::bytes_31::Bytes31Trait

## Signature

```rust theme={null}
pub trait Bytes31Trait
```

## Trait functions

### at

Returns the byte at the given index (LSB's index is 0).
Assumes that \`index  u8

```


```