Other
Memory-conscious collections, supporting flat small hashtables, hash maps, and hash sets.
Keeps all elements with a single flat array, with size 2-3x times the number of elements (but with const lookup time by key).
Maintainer: Dejwk
This library is compatible with all architectures so you should be able to use it on all the Arduino boards.
To use this library, open the Library Manager in the Arduino IDE and install it from there.