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Chandler CarruthandRichard Smith
94d2c1c6d4
We've talked about adding the title to the filename several times over the years and it seems really valuable. This requires us to compute a "slug" for the title spelling that can be part of the filename. Beyond that, we crossed 7000 recently, and so it seems likely that we will need to add digits sooner rather than later here, so this goes ahead and moves us to 6 digits so we don't have to adjust again for a reasonable length of time. To implement this and ensure we can sustain it going forward this adds a tool to our pre-commit that validates (and corrects if needed) the filename. In order to update everything and keep links working, there are a _lot_ of changes, but the most interesting for direct review are in `proposals/scripts`. Assisted-by: Antigravity with Gemini --------- Co-authored-by: Richard Smith <richard@metafoo.co.uk>
58 lines
1.8 KiB
Markdown
58 lines
1.8 KiB
Markdown
# Pointer operators
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Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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Exceptions. See /LICENSE for license information.
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SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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-->
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## Table of contents
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- [Overview](#overview)
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- [Details](#details)
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- [Precedence](#precedence)
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- [Alternatives considered](#alternatives-considered)
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- [References](#references)
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<!-- tocstop -->
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## Overview
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Carbon provides the following operators related to pointers:
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- `&` as a prefix unary operator takes the address of an object, forming a
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pointer to it.
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- `*` as a prefix unary operator dereferences a pointer.
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Note that [member access expressions](member_access.md) include an `->` form
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that implicitly performs a dereference in the same way as the `*` operator.
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## Details
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The semantic details of pointer operators are collected in the main
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[pointers](/docs/design/values.md#pointers) design. The syntax and precedence
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details are covered here.
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The syntax tries to remain as similar as possible to C++ pointer types as they
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are commonly written in code and are expected to be extremely common and a key
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anchor of syntactic similarity between the languages.
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### Precedence
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These operators have high precedence. Only [member access](member_access.md)
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expressions can be used as an unparenthesized operand to them.
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The two prefix operators `&` and `*` are generally above the other unary and
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binary operators and can appear inside them as unparenthesized operands. For the
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full details, see the [precedence graph](README.md#precedence).
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## Alternatives considered
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- [Alternative pointer syntaxes](/proposals/p002006-values-variables-pointers-and-references.md#alternative-pointer-syntaxes)
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## References
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- [Proposal #2006: Values, variables, and pointers](/proposals/p002006-values-variables-pointers-and-references.md)
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