Understanding Prisms in Elixir for Contextual Existence

The article explores how Prisms in Elixir can manage the complexity of transactions that have conditional existence based on their context. By demonstrating through the development of a transaction processor, it explains that while a field like 'amount' can represent different meanings depending on the transaction type (such as a purchase or refund), Prisms provide a clear way to express and enforce these boundaries. This approach allows for cleaner error handling and better management of transactions, ensuring that operations are valid within specific contexts. The article also highlights how using functions like Maybe.may and pattern matching can enforce domain constraints and facilitate the processing of batches of transactions, enhancing code readability and maintainability.