[mcabbott]

The Julia translations of these might look as follows:

    using OffsetArrays
    
    cash_flows = zeros(0:max_time)
    
    altitude = zeros(Bool, -100:100)
    
    for I in eachindex(cash_flows)
        some_function(cash_flows[I])
    end
    # or in this case avoiding indexing:
    for cf in cash_flows
        some_function(cf)
    end
    foreach(some_function, cash_flows)

OffsetArrays is not quite a standard library but it's close. A lot of library code will work like this, calling `eachindex` or `axes` so as to be indifferent to how the arrays are indexed, and to pass this behaviour through to outputs as appropriate.

[Jtsummers]

Thanks. I'll be taking a look a that for my code. I probably won't use this extensively, but it is a feature I have found useful in Ada (though I'm only a hobbyist, I gave up on convincing work to use it). I'm still a novice with Julia, but I'm doing some math heavy code and started exploring it for its relative ease of use (REPL, fast execution after compilation, ergonomics-focused language design).