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Document the abbreviation of zero-sized types. #173

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Merged
merged 4 commits into from
Jul 26, 2019
Merged

Document the abbreviation of zero-sized types. #173

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1ef7a4c
Document the abbreviation of zero-sized types.
gnzlbg Jul 24, 2019
e2a97ac
Drop generic notation
gnzlbg Jul 26, 2019
a4ffcd9
Add example of 1-ZST and not to the glossary
gnzlbg Jul 26, 2019
4a4f964
Update reference/src/glossary.md
gnzlbg Jul 26, 2019
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8 changes: 8 additions & 0 deletions reference/src/glossary.md
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Expand Up @@ -73,6 +73,14 @@ niches. For example, the "all bits uninitialized" is an invalid bit-pattern for
`&mut T`, but this bit-pattern cannot be used by layout optimizations, and is not a
niche.

#### Zero-sized type / ZST

Types with zero size are called zero-sized types, which is abbreviated as "ZST".
This document also uses the "1-ZST" abbreviation, which stands for "one-aligned
zero-sized type", to refer to zero-sized types with an alignment requirement of 1.

For example, `()` is a "1-ZST" but `[u16; 0]` is not because it has an alignment
requirement of two.

### TODO

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