Pairtwo
Pairtwo is a term used in computer science and data modeling to denote a simple two-element pairing construct. In its most common form, pairtwo stores exactly two related values in a single composite object, often labeled as first and second. It is effectively a two-element tuple or 2-tuple and serves as a basic building block for representing associations, pairs of related records, or arguments to functions that operate on two inputs.
In programming languages that support product types, pairtwo can be implemented as a pair, a 2-tuple, or
Usage patterns include serving as a lightweight container for related values, acting as a surrogate for key-value
History and relationship to other concepts: the idea traces to the broader notion of product types and