🎞️ Rust Collections §

Common §

• .len() → length of sequence
• [i] → item at index i

Types §

Arrays §

Constant size, single type

• [T; N]
  • Type: T
  • Size: N

Creation §

• [V; N]
  • Creates an array with N items of value V

Vectors §

Dynamic size, single type

• Vec<T>
  • Type: T
• In heap

Functions §

• .push(x) → push x to vector

Creation §

• vec![...]
  • creates new vectors with elements in []
• vec![V, N]
  • creates new vector with N elements of value V
• .collect()

Slices §

Pointer to first element, with count of accessable elements from it

Other §

• VecDeque<T>: like a stack, but accessible from both sides
• BinaryHeap<T>: Loosely organized, greatest value always bubbles up to front of queue
• HashMap<K, V>, BTreeMap<K,V>
  • have Entry items