Expand description
What one eight-byte word means.
ADR 0034 keeps the
word untagged and puts its meaning in static metadata. This is that
metadata at its smallest unit: one Repr per slot, per field, per array
element.
A Repr describes one word, not one value. A value may occupy several
consecutive slots, and what says how many is a
Layout — a run of these. The two are separate for the
reason the collector is: it asks exactly one question, of one word at a
time, and a reference map that is one bit per slot answers it without a
range table.
Structs§
Enums§
- Repr
- The interpretation of one word.