OneTwoMany.jl

This package provides utility functions for accessing the second element, as well as the first, second and remaining elements, of iterable objects:

• A function getsecond(x): Julia provides the functions first and last, but not second (except for Dates.second, which is about seconds in time). last can be used to access the second element of a Tuple with two elements or a Pair, but getsecond is clearer semantically. With tuples, it is also safer in cases where the upstream code that generates the tuple might change and generate longer tuples in the future.

• Two functions first_and_rest and first_second_rest to get both the first (two) element(s) and the rest of an iterable object.

• Two functions firstarg and secondarg to get that simply return their first, resp. second, argument.