Both are fine, IMO. In a context where array indexing is pointer plus offset, zero indexing makes a lot of sense, but in a higher level language either is fine.

Both are fine, IMO. In a context where array indexing is pointer plus offset, zero indexing makes a lot of sense, but in a higher level language either is fine. I worked in SmallTalk for a while, which is one indexed, and sometimes it made things easier and sometimes it was a bit inconvenient. It evens out in the end. Besides, in a high level language, manually futzing around with indexing is frequently a code smell; I feel you generally want to use higher level constructs in most cases.