slim-futures

Provides Future and Stream combinators as a supplement for futures crate, but focus on small memory occupation and small binary size.

Advantages:

• Have minimal memory occupation.
• Some combinators have less internal states than their futures counterparts, which could be beneficial for binary size.
• Supports more Try types, rather than only Result type.
• Provides both asynchronous and synchronous version of combinators, where the asynchronous ones have a _async suffix.
• Provides extra combinators that is not implemented by futures crate.

Disadvantages:

• Combinators do not support FnOnce functions.
• Unless it’s free, combinators do not implement FusedFuture and FusedStream.
• Some combinators requires user to provide a method for taking ownership of a value by mutable reference. For example, AsyncIteratorExt::slim_fold_by* combinators requires user to specify a method for taking the value out of the future, either by Copying, Clone::clone, mem::take, or some other user provided function.
• Currently, the project is in its early stage, APIs are not stabilized, and the implementations have not been fully verified, use with caution.

Here is the list of combinators provided by slim-futures, and their futures counterparts.