December 07, 2025

Enhancing the Either DSL with Context-aware Tap in Funx

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Enhancing the Either DSL with Context-aware Tap in Funx

Source: joekoski.com

The article explains refinements to the Either DSL by incorporating a context-aware tap. This new functionality allows a certain operation (broadcasting updates) to proceed only in cases where the previous operations have succeeded, while gracefully ignoring the result of the broadcast. The author, Joseph Koski, details a previous limitation where the broadcast's potential failure was overlooked, and how the new implementation correctly represents the possibility of failure with either a success or error state. The article also contrasts the earlier implementation with the revised approach which emphasizes readability and adaptability in complex business logic scenarios.

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