Pattern Matching via Choice Existential Quantifications in Imperative Languages

TL;DR

The paper introduces a new selection statement called choice existentially quantified statement for pattern matching in imperative languages, demonstrating its usefulness through examples.

Contribution

It proposes a novel selection construct for imperative languages, expanding pattern matching capabilities beyond traditional if-then-else, switch, and try-catch statements.

Findings

New choice existentially quantified statement is useful for pattern matching.

Examples demonstrate practical applications of the new statement.

The approach enhances expressiveness in imperative programming languages.

Abstract

Selection statements -- if-then-else, switch and try-catch -- are commonly used in modern imperative programming languages. We propose another selection statement called a {\it choice existentially quantified statement}. This statement turns out to be quite useful for pattern matching among several merits. Examples will be provided for this statement.