Library collections
This is exported from the core library, which means you don't need to import it.
Classes
A double-ended queue.
A map that uses object identity instead of the == operator to test equality of keys. This map still uses the hash-code method on keys (see Map). There is no identity hash code operation on arbitrary classes in Toit.
A set that uses object identity instead of the == operator to test equality of elements. This set still uses the hash-code method on elements (see Set). There is no identity hash code operation on arbitrary classes in Toit.
A linear collection of objects.
A map from key objects to values.
A set of keys.