refactor-simplify-branching

Deeply nested conditional branching can be simplified using guard clauses for early returns, polymorphism to replace conditionals with protocol dispatch, table-driven lookups for multi-branch chains, and decomposition of complex conditions into named variables or methods. These techniques reduce nesting to three levels or fewer and improve readability and testability.

Guard clauses work best when you have multiple early-exit conditions. Place validation checks or error cases at the function start with immediate returns, eliminating the need for deeply nested else blocks. This flattens control flow and makes the happy path more obvious.

Yes. Polymorphism replaces branching on type or state by dispatching to different implementations. Create protocol or interface types for each branch case, then call methods polymorphically. This moves conditional logic into object structure, improving maintainability and testability.

Refactor high cyclomatic complexity by breaking compound conditionals into named variables or helper methods, applying guard clauses to reduce nesting depth, and replacing flag arguments with polymorphism or table lookups. These steps lower complexity, improve readability, and make testing easier.

Table-driven lookups replace nested conditionals by mapping inputs to outputs through data structures like maps or arrays. Instead of branching on conditions, look up the result. This works across languages supporting guard clauses, polymorphism, and table-driven patterns.

Branching refactoring applies across languages that support guard clauses, polymorphism, and table-driven lookups. It suits legacy systems and feature branches with poor readability. Techniques adapt to your language's paradigm while achieving the same reduction in nesting and complexity.