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Microsoft has launched Proxy 4, an replace of its Proxy library for runtime polymorphism within the C++ language. The brand new launch introduces constructing blocks for composing facades, aliases to precise borrowing and weak possession patterns, helpers for effectively creating shared and weak proxies, and extra.
Proxy 4 was introduced August 19. Discovered on GitHub, Proxy is described as a header-only, cross-platform C++20 library for writing polymorphic code with out the ache of inheritance or the restrictions of conventional digital capabilities.
Proxy 4 introduces handy aliases for non-owning and weak references, proxy_view and weak_proxy. These are constructed atop the core proxyidea, making it simpler to precise borrowing and weak possession patterns in code, Microsoft stated. For instance, builders can use proxy_view to soundly borrow an object with out taking possession, or weak proxy to construct a weak reference that may be locked when obligatory.