DIP39
Revision as of 00:17, 11 May 2013 by Timotheecour (talk | contribs)
DIP 39: Safe rvalue references: compatible with DIP38, backwards compatible, safe against ref/nonref code evolution.
| Title: | Safe rvalue references: compatible with DIP38, backwards compatible, safe against ref/nonref code evolution. |
|---|---|
| DIP: | 39 |
| Version: | 1 |
| Status: | Draft |
| Created: | 2013-05-10 |
| Last Modified: | 2013-05-10 |
| Author: | Timothee Cour |
| Links: |
Abstract
We propose to introduce rvalue references that are:
- safe: guarantees memory safety so that references will always point to valid memory.
- compatible with DIP38: can use same inref/outref internal compiler annotation for input references that can be returned by ref by a function.
- backwards compatible: current valid D code will continue to work without change. In addition, additional code becomes valid with call site rvalue ref annotation.
- safe against ref/nonref code evolution: call site rvalue ref compulsory annotation turns ref/nonref changes into compile errors instead of silently changing code behavior.
- both const ref or ref can be used with rvalue refs (more flexible than C++)
- no call site ref annotation when input ref argument is already an lvalue (different from C#), for backwards compatibility (and making it less verbose)
- compatible with UFCS
Copyright
This document has been placed in the Public Domain.
