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Jon Meow
79a9b51d07
Adopts new copyright and markdown toc checks. The new toc check generates the toc header, so that's why all the md files changed (this had felt better to me for the long-term, more auto-generated content)
50 lines
1.4 KiB
Markdown
50 lines
1.4 KiB
Markdown
# Aliases
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<!--
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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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<!-- toc -->
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## Table of contents
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- [TODO](#todo)
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- [Overview](#overview)
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- [Alternatives](#alternatives)
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<!-- tocstop -->
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## TODO
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This is a skeletal design, added to support [the overview](README.md). It should
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not be treated as accepted by the core team; rather, it is a placeholder until
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we have more time to examine this detail. Please feel welcome to rewrite and
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update as appropriate.
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## Overview
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Naming is one of the things that most often requires careful management over
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time -- things tend to get renamed and moved around.
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Carbon provides a fully general name aliasing facility to declare a new name as
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an alias for a value; everything is a value in Carbon. This is a fully general
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facility because everything is a value in Carbon, including types.
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For example:
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```
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alias MyInt = Int;
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```
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This creates an alias called `MyInt` for whatever `Int` resolves to. Code
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textually after this can refer to `MyInt`, and it will transparently refer to
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`Int`.
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### Alternatives
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The syntax here is not at all in a good state yet. We've considered a few
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alternatives, but they all end up being confusing in some way. We need to figure
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out a good and clean syntax that can be used here.
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