Correctness and composability bugs in the Julia ecosystem
&gt; If you pass it an array with an unusual index range, it will access out-of-bounds memory: the array access was annotated with @inbounds, which removed the bounds check.<p>It think making indexes configurable is a huge mistake. Even if they are not ideal for the situation, having a single way to do indexes makes a huge source of confusion and potential bugs just go away. And this is orthogonal to whether you pick 0 or 1 as your starting point, as long as the whole language embraces that.<p>For example with C&#x2F;C++&#x2F;Rust, you know it is zero based indexing. Even if it is not perfectly ideal for your formulas, the mental math of translating to zero based is with not constantly having to worry about if a library is one based or zero based and what happens if you compose them.