Result builders are pretty popular in third party libraries, too. There's good use of them in Pointfree's libraries Parsing (https://github.com/pointfreeco/swif

Result builders are pretty popular in third party libraries, too. There's good use of them in Pointfree's libraries Parsing (https://github.com/pointfreeco/swift-parsing https://github.com/pointfreeco/swift-parsing) and Composable Architecture (https://pointfreeco.github.io/swift-composable-architecture/main/documentation/composablearchitecture/migratingtothereducerprotocol/ https://pointfreeco.github.io/swift-composable-architecture/...). A quick search in the package index also finds things like these: - https://swiftpackageindex.com/davidcaddy/DCSettings https://swiftpackageindex.com/davidcaddy/DCSettings - https://swiftpackageindex.com/tdeleon/relax/2.1.0/documentation/relax/definingrequests https://swiftpackageindex.com/tdeleon/relax/2.1.0/documentat... - https://swiftpackageindex.com/mkj-is/PathBuilder https://swiftpackageindex.com/mkj-is/PathBuilder - https://swiftpackageindex.com/Saelyria/Artemis https://swiftpackageindex.com/Saelyria/Artemis - https://swiftpackageindex.com/FluidGroup/MondrianLayout https://swiftpackageindex.com/FluidGroup/MondrianLayout etc.