[![CI](https://github.com/lpenz/folderer/actions/workflows/ci.yml/badge.svg)](https://github.com/lpenz/folderer/actions/workflows/ci.yml) [![coveralls](https://coveralls.io/repos/github/lpenz/folderer/badge.svg?branch=main)](https://coveralls.io/github/lpenz/folderer?branch=main) [![crates.io](https://img.shields.io/crates/v/folderer)](https://crates.io/crates/folderer) [![doc.rs](https://docs.rs/folderer/badge.svg)](https://docs.rs/folderer) # folderer *folderer* is a single-element folding container that can be used to accumulate and select values (for example) in an ad-hoc fashion.