Add `and_then`, `or_else`, `transform`, and `transform_error`.

Question

Closed this issue a year ago · 3 comments

https://en.cppreference.com/w/cpp/utility/expected in C++23 will have those four member functions. We should have them in this expected library too.

Answer 1 · 2023-02-08T09:32:42.000Z

thanks for the heads-up.

Answer 2 · 2023-02-09T21:21:00.000Z

See proposal p2505: Monadic Functions for std::expected by Jeff Garland.

Answer 3 · 2023-09-30T10:58:40.000Z

Implemented by @szaszm in #60.