Crate keyed_set

Keyed Set: a hashbrown-based HashSet that indexes based on projections of its elements.

Ever wanted a HashMap<K, V>, but where V actually contains K (or at least can be projected to it)? Well this is it.

The easiest way to define a projection is through a closure that you pass at construction, but you may also define your own key extractors as ZSTs that implement Default to gain a Default constructor for your Keyed Sets.

Structs

• DefaultBorrower
  The default way to borrow a value.
• Drain
  An iterator over a KeyedSet that steals the values from it.
• DrainFilter
  An iterator over a KeyedSet that only steals values that match a given predicate.
• IntoIter
  An iterator over the KeyedSet by value.
• Iter
  An iterator over the KeyedSet by reference.
• IterMut
  An iterator over the KeyedSet by mutable reference.
• KeyedSet
  A HashMap<K, V> where K is a part of V
• KeyedSetGuard
  A guard that allows mutating a value, but which panics if the new value once dropped doesn’t have the same key.
• VacantEntry
  A vacant entry into a KeyedSet

Enums

• Entry
  An entry into a KeyedSet, allowing in-place modification of the value associated with the key if it exists.

Traits

• IBorrower
  Allows defining alternatives to core::ops::Deref
• IEntry
  The trait magic that allows KeyedSet::entry to work.
• KeyExtractor
  Extracts the key from the value, allowing KeyedSet to obtain its values’ keys.