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Document underscores in number literals

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Kurtis Rader 2020-07-29 20:58:33 -07:00 committed by Qi Xiao
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website/ref/language.md
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@ -139,6 +139,10 @@ and `NaN`.
The `float64` builtin is case-insensitive.
Numbers can contain underscores between digits to improve readability. For
example, `1000000` and `1_000_000` are equivalent. As is `1.234_56e3` and
`1.23456e3`. You can not use an underscore as a prefix or suffix in a number.
A `float64` data type can be converted to a string using `(to-string $number)`.
The resulting string is guaranteed to result in the same value when converted
back to a `float64`. Most of the time you won't need to perform this explicit