rangeeither

rangeeither is a concept often encountered in programming, particularly in functional programming paradigms. It represents a value that can be one of two distinct types. This is analogous to the `Either` type found in many functional languages, which typically distinguishes between a "left" value (often representing an error or failure) and a "right" value (representing a success or expected result). The "range" aspect implies that the context or domain of these two types is relevant.

The primary purpose of rangeeither is to provide a structured way to handle situations where a computation might yield one of two outcomes. Instead of relying on exceptions or nullable types, which can sometimes lead to less predictable code, rangeeither enforces that a value is explicitly one type or the other. This encourages developers to consider both possible outcomes and handle them appropriately, leading to more robust and predictable software.

When working with a rangeeither value, one must typically check which of the two possible types the value currently holds before attempting to operate on it. This pattern helps to prevent runtime errors that could occur if a program attempted to use a value as if it were of one type when it was actually of the other. The exact implementation and naming conventions might vary between programming languages and libraries, but the core idea of representing a choice between two distinct possibilities remains consistent.