e/Index mapping

Information
has gloss	eng: Index mapping is a computer science term (also known as a "trivial hash function" ) that is used to describe the mapping of raw data, used directly as in array index, for an array. The technique can be most effective for mapping data with a small range. If the array encompasses all combinations of input, a range check is not required. Applicable arrays In practise there are many examples of data exhibiting a small range of valid values all of which are suitable for processing using a trivial hash function including:
lexicalization	eng: Index mapping
instance of	e/Associative array