摘要： Experimental successor to C++ strives for C++ performance and compatibility while avoiding its technical debt and ‘extreme difficulty’ to improve.
Is it time for a successor to the stalwart C++ language? A group of developers at Google and other organizations believe it is.
The group is behind an experimental language called Carbon, which offers interoperability with C++ while overcoming purported difficulties in improving the legacy language. Carbon attempts to overcome these obstacles by starting over with solid language foundations such as modern generics, a simple syntax, and modular code organization while avoiding the “decades of technical debt” of C or C++.
However, they emphasize that Carbon is not ready for use.
The developers of Carbon acknowledge that C++ remains the dominant programming language for building performance-critical software and has massive and growing code bases and investments. Carbon presents a successor approach rather than an evolution and is intended to enable migration for existing C++ code bases and C++ developers.
Carbon was the subject of a presentation last week at the CppNorth conference in Toronto. Resources for Carbon can be accessed from the project’s GitHub repo. Project developers list the following requirements for a C++ successor, stressing that their approach can be built on top of the C++ ecosystem:
· Matching C++ in performance
· Seamless, bidirectional interoperability with C++
· A gentle learning curve
· Comparable expressivity
· Scalable migration
At present, there is no working Carbon compiler or toolchain but developers can examine a demo interpreter for the language. Developers can participate in a design discussion forum on GitHub. An open source project structure, governance model, and evolution process also are core aspects of Carbon.
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