Rollup merge of #24992 - steveklabnik:gh24730, r=alexcrichton

Fixes #24730

r? @alexcrichton
This commit is contained in:
Manish Goregaokar 2015-05-01 11:12:16 +05:30
commit d3b7c5258f
2 changed files with 16 additions and 1 deletions

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@ -2425,11 +2425,18 @@ Tuples are written by enclosing zero or more comma-separated expressions in
parentheses. They are used to create [tuple-typed](#tuple-types) values.
```{.tuple}
(0,);
(0.0, 4.5);
("a", 4usize, true);
```
You can disambiguate a single-element tuple from a value in parentheses with a
comma:
```
(0,); // single-element tuple
(0); // zero in parentheses
```
### Unit expressions
The expression `()` denotes the _unit value_, the only value of the type with

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@ -248,6 +248,14 @@ or “breaks up” the tuple, and assigns the bits to three bindings.
This pattern is very powerful, and well see it repeated more later.
You can disambiguate a single-element tuple from a value in parentheses with a
comma:
```
(0,); // single-element tuple
(0); // zero in parentheses
```
## Tuple Indexing
You can also access fields of a tuple with indexing syntax: