I was reading up on the new arrays with custom indices in 0.5. Now that 
array indices do not implicitly start with one, what's the generic 
replacement for index ranges like

A[2:end-1]

Will there by something like

A[start+1:end-1]

or so?

Also, since for safety reasons length(A) is now supposed to throw an error 
for custom-indexed Arrays (for safety, to prevent 1:length[A]), the current 
recommendation (http://docs.julialang.org/en/latest/devdocs/offset-arrays/) 
is to use

length(linearindices(A))

instead of length() in generic code. This strikes me as very lengthy indeed 
(pardon the pun) and will make code less readable - how about a new length 
function like

Base.len(A) = length(linearindices(A))

or similar? If there's no "official" replacement for length in Base, I 
suspect that packages will add their own internal version of it at some 
point. Also, people might get tempted to continue using length() out of 
laziness (if there's no short replacement) - resulting in code that fails 
for the new arrays.


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