Except that it was mentioned, at the very least tangentially, in the article: what to do when, for example, someone creates an entry in an array by giving it a

Except that it was mentioned, at the very least tangentially, in the article: what to do when, for example, someone creates an entry in an array by giving it an ordinal position that doesn't exist. Do we create an array of suitable length and fill it with bits of emptiness in order to maintain the illusion that this array is ordinal?