CODEWITHSUNDEEP
data-structuresrust
zowleX
zowleX

Reputation: 1

Rust - create new Vec<Vec<K,V>>

I am trying to implement COLA(Cache oblivious look ahead array) in rust using this structure

struct COLA<K: Ord+Copy, V:Clone>{
    levels: Vec<Vec<(K,V)>>,
}

My question is how to initialize levels in function fn new()?

I already tried initializing just the outer Vec but I that K,V should be inferred or something similar during creation.

Upvotes: 0

Views: 98

Answers (1)

Jeremy Meadows
Jeremy Meadows

Reputation: 2581

You do only need to initialize the outer Vec, but to get the generic type arguments to follow it down to the method implementations, you need to stick them on the impl block:

impl<K: Ord + Copy, V: Clone> Cola<K, V> {
    fn new() -> Self{
        Cola::<K, V> {
            levels: Vec::new(),
        }
    }
};

Upvotes: 1

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