Eff is a programming language with algebraic effects and handlers.
Eff is described in a paper published in 2015 at JLAMP:
Bauer, Andrej, and Matija Pretnar. ‘Programming with Algebraic Effects and Handlers’. Journal of Logical and Algebraic Methods in Programming 84, no. 1 (2015): 108–23. https://doi.org/10.1016/j.jlamp.2014.02.001. [pdf]
@article{bauer_programming_2015,
title = {Programming with algebraic effects and handlers},
volume = {84},
doi = {10.1016/j.jlamp.2014.02.001},
pages = {108--123},
number = {1},
journaltitle = {Journal of Logical and Algebraic Methods in Programming},
author = {Bauer, Andrej and Pretnar, Matija},
date = {2015},
file = {Submitted Version:C\:\\Users\\Alex\\Zotero\\storage\\WI5K3RBI\\Bauer and Pretnar - 2015 - Programming with algebraic effects and handlers.pdf:application/pdf},
}