error-iter

Use Error::iter_chain and Error::iter_sources on stable Rust.

MSRV

Supported Rust 1.37.0 and higher.

Compiles on Rust 1.31.0, but does not return the tail source. (Tests fail on anything less than 1.37.0.)

What is this?

iter_chain and iter_sources are incredibly useful for providing context on error in Rust applications. For motivation, see RFC 2504. These iterators are available in nightly compilers with #58520 tracking stabilization.

This crate does not attempt to be 100% compatible with the stabilization effort, but does want to provide very similar functionality to stable Rust.

Show me

cargo run --example simple

Why not a derive macro?

PRs welcome! :)