# Trait ethcore_util::vector::SharedPrefix [−] [src]

    pub trait SharedPrefix<T> {
        fn shared_prefix_len(&self, elem: &[T]) -> usize;
    }

Returns len of prefix shared with elem

    extern crate ethcore_util as util;
    use util::vector::SharedPrefix;

    fn main () {
        let a = vec![1,2,3,3,5];
        let b = vec![1,2,3];
        assert_eq!(a.shared_prefix_len(&b), 3);
    }

## Required Methods

### `fn shared_prefix_len(&self, elem: &[T]) -> usize`

Get common prefix length

## Implementors

- `impl<T> SharedPrefix<T> for [T] where T: Eq`

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