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docs: Disallow decimal literals with trailing dots

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Currently the documentation suggests that a decimal literal can omit the
fractional part [1]:

> Decimal fractional literals are formed by a `.` with at least one
> number on one side. Examples include `1.`, `.1` and `1.3`.

However, commit ac68710 (May 30, 2018) disallowed trailing dots that are
not followed by a number [2].

Using decimal literals of the form `1.` will actually result in a
`ParserError` and so the docs should no longer recommend this form.

[1] https://docs.soliditylang.org/en/v0.8.15/types.html#rational-and-integer-literals
[2] https://github.com/ethereum/solidity/commit/ac6871078940f0ae4a47380091fc46ed46a63d0a
This commit is contained in:
Aiman Baharna
2022-06-22 17:19:12 +01:00
parent 02fdcb3623
commit 392b1872b3
1 changed files with 2 additions and 2 deletions
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docs/types/value-types.rst
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@@ -448,8 +448,8 @@ Integer literals are formed from a sequence of digits in the range 0-9.
They are interpreted as decimals. For example, ``69`` means sixty nine.
Octal literals do not exist in Solidity and leading zeros are invalid.
Decimal fractional literals are formed by a ``.`` with at least one number on
one side. Examples include ``1.``, ``.1`` and ``1.3``.
Decimal fractional literals are formed by a ``.`` with at least one number after the decimal point.
Examples include ``.1`` and ``1.3`` (but not ``1.``).
Scientific notation in the form of ``2e10`` is also supported, where the
mantissa can be fractional but the exponent has to be an integer.