śr., 16 sty 2019 o 20:51 Emil Dotchevski via Boost
LEAF is a C++11 error handling library for use in low-latency environments.
I'm looking for a Boost Review Manager. Any one of you good people willing to volunteer? :)
Features:
-Header-only, no dependencies.
- No dynamic memory allocations.
- Any error-related object of any movable type is efficiently delivered to the correct error handler.
- Compatible with std::error_code, errno and any other error code type.
- Support for multi-thread programming.
- Can be used with or without exception handling.
Hi Emil, In the docs we can see that one of the requirements for result<T> is that "T must be movable, and its move constructor may not throw." This seems to preclude guard-like types that are not movable to be returned from functions via result<T>. Like std::mutex. When a wrapper type is returned by value there is no need to move the internally stored T. At east in C++17. In principle, a wrapper should not require the wrapped type to be movable. Types like boost::optional or outcome::result do not have this requirement. They provide an "in-place" constructor for this purpose. Is it possible to lift the requirement in leaf::result? Also, the part "move constructor may not throw" is a bit ambiguous. It could mean: 1. The program will not compile unless T's move constructor is annotated as `noexcept` or `throw()`. 2. If a move constructor of T is invoked and it ends by throwing an exception the behavior of the program is undefined. IOW, can I pass types potentially throwing from move constructors (like std::list<int>) at my own risk or is it statically prevented? Regards, &rzej;