| # fit-promise library |
| |
| This was formerly part of the `lib/fit` library. |
| Further migrations and renamings are expected. |
| |
| ## fit::promise, fit::future, fit::executor, etc. |
| |
| - When writing asynchronous event-driven programs, it's convenient to be able |
| to stage a sequence of asynchronous tasks. This tends to be challenging |
| to implement in a callback-driven manner due to object lifetime issues, |
| so we would like an alternative pattern that is easier to apply correctly, |
| such as by expressing asynchronous logic as a compositions of futures. |
| - The C++ 14 standard library offers `std::future` but it is tied to a |
| thread-based execution model. Awaiting a future requires blocking, which |
| is bad for event loops. |
| - So libfit offers a family of APIs that work better with event loops. |
