collectivity

Generic collection traits.

Get

The Get trait provides safe access to a value at a specified position. The trait is generic over both keys and values of the collection, as well as their lifetimes. Due to the use of generic associated types, both the received index and the return value of the get method can be either borrowed or owned.

Examples

use collectivity::Get;

fn multiply_at(
  data: impl for<'b> Get<Key<'b> = usize, Value<'b> = &'b usize>,
  pos: usize,
  multiplier: usize,
) -> Option<usize> {
  data.get(pos).map(|v| v * multiplier)
}

Len

The Len trait provides the len method, which returns the number of entries within a collection.

Examples

use collectivity::Len;

fn check_len(
  data: impl Len
) -> usize {
  data.len()
}

License: MIT