Why are there slight different behaviors with array accesses?

Question

My array is:

array = [:peanut, :butter, :and, :jelly]

array[4,0] gives []

But:

array[5,0] gives nil

I was suspecting array[4,0] should also give nil as the array has only a third index which is :jelly.

Can any Ruby punters out there clarify this behaviour?

@falsetru Almost _exact_ duplicate, in fact. – Reinstate Monica -- notmaynard Sep 25 '13 at 14:50 — Reinstate Monica -- notmaynard, Sep 25 '13 at 14:50

score 2 · Answer 1 · edited Jun 20 '20 at 09:12

2

It's all in the documentation:

Additionally, an empty array is returned when the starting index for an element range is at the end of the array.

Returns nil if the index (or starting index) are out of range.

edited Jun 20 '20 at 09:12

Community

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answered Sep 25 '13 at 14:49

Sergio Tulentsev

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Why are there slight different behaviors with array accesses?

1 Answers1