Question: How to write the following funtion in lua? Function allSubs this takes a single parameter s, which must be a string. It returns an iterator.

How to write the following funtion in lua? Function allSubs this takes a single parameter s, which must be a string. It returns an iterator. Looping through the iterator gives all substrings of s: first the unique length-zero substring, then all length-one substrings, and so on, ending with s itself.

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