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iOS Protocols in Swift Creating Flexible Objects Using Protocols Protocol Oriented Programming

Jacob Paul
Jacob Paul
829 Points
Posted by Jacob Paul
Jacob Paul
829 Points

Omitting external variable name

On the "Movable" protocol, is there a reason to omitted the external name with the "_" character? When should this be implemented?

1 Answer

Leo Sjoberg
Leo Sjoberg
2,462 Points

Hi Jacob, Pasan chose the external name to be _ as it would make the function read more nicely when you call it later on. Instead of it being read func move(direction: Up) it will now read as func move(up) which sounds more naturally when you read it out load.