Meh. You can reasonably expect someone interested in this project would have at least some passing understanding of functional programming, if not the niche of programming Elm and Elixir are trying to fill. In which case arrows and lambdas should be fine. Even if you're a C++ developer, you've seen arrows drawn in some capacity, I can't imagine what confusion using an arrow could possibly cause.
The confusion, which may not apply for a savvy developer, would arise from somehow believing that the unicode arrow (→) is being used and not the hyphen-greater-than-sign (->) arrow.
How hard is it to look it up if you find yourself willing to learn the language? I have a hard time seeing this as anything other than an insignificant nit-pick.
