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Add syntax for tuples and re-enforce homogenous arrays. #154

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Add syntax for tuples and re-enforce homogenous arrays. #154

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25 changes: 23 additions & 2 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -146,17 +146,38 @@ Datetimes are ISO8601 dates, but only the full zulu form is allowed.
1979-05-27T07:32:00Z
```

Tuple
-----

Tuples are ordered sets of values, often used for brevity in storing large
amounts of structured data in arrays. They are represented by a comma separated
list inside of parentheses.

```toml
(1, "tom", "staff") # Perhaps some UNIX account info.
(2.48, 9.37, 28.81) # Or maybe x/y/z coordinates.
```

Array
-----

Arrays are square brackets with other primitives inside. Whitespace is ignored.
Elements are separated by commas. No, you can't mix data types, that's stupid.
Elements are separated by commas.

```toml
[ 1, 2, 3 ]
[ "red", "yellow", "green" ]
[ [ 1, 2 ], [3, 4, 5] ]
[ [ 1, 2 ], ["a", "b", "c"] ] # this is ok
[ (5, 3, 2), (7, 19, 8) ]
```

No, you can't mix data types, that's stupid.

```toml
# INVALID TOML FILE
[ 1, "one" ] # NOPE
[ [ 1, 2 ], ["a", "b", "c"] ] # NOPE
[ (1, "red"), (2.1, 5.9) ] # NOPE
```

Arrays can also be multiline. So in addition to ignoring whitespace, arrays also
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