Getting the last element of an iterator

[mschauer]

Length from iterator?

Sometimes I found it useful to get the length and the last iterate, e.g. if the iterator does some numerical work until a convergence criteria holds. So a generally useful function is: lastiterate(itr) = foldl((x, y) -> y, itr) And then julia> lastiterate('A':'Z') 'Z' and julia> lastiterate(enumerate('A':'Z')) (26, 'Z')

lastiterate(itr) = foldl((_, y) -> y, itr)

or

lastiterate(itr) = applicable(last, itr) ? last(itr) :  foldl((_, y) -> y, itr)