Function casbin::rhai::config::hashing::set_hashing_seed

pub fn set_hashing_seed(
    new_seed: Option<[u64; 4]>
) -> Result<(), Option<[u64; 4]>>

Set the hashing seed. This is used to hash functions etc.

This is a static global value and affects every Rhai instance. This should not be used unless you know you need it.

Set the hashing seed to all zeros effectively disables stable hashing.

Warning

• You can only call this function ONCE for the entire duration of program execution.
• You MUST call this before performing ANY Rhai operation (e.g. creating an Engine).

Error

Returns an error containing the existing hashing seed if already set.

Example

// Set the hashing seed to [1, 2, 3, 4]
rhai::config::hashing::set_hashing_seed(Some([1, 2, 3, 4])).unwrap();

// Use Rhai AFTER setting the hashing seed
let engine = Engine::new();