At Uber, we use feature flags to customize our mobile app execution, serving different features to different sets of users. These flags allow us to, for example, localize the user’s experience in different regions where we operate and, more importantly, …
Murali Krishna Ramanathan
Murali Krishna Ramanathan is a programming systems research scientist at Uber. He currently works on building program analysis tools to improve developer productivity. In the past, he has designed novel program analyses for concurrency bug detection and automated test generation.
Engineering Blog Articles
Research Papers
Optimization of Swift Protocols
R. Barik, M. Sridharan, M. K. Ramanathan, M. Chabbi
Swift, an increasingly-popular programming language, advocates the use of protocols, which define a set of required methods and properties for conforming types. Protocols are commonly used in Swift programs for abstracting away implementation details; e.g., in a large industrial app from Uber, they are heavily used to enable mock objects for unit testing. Unfortunately, heavy use of protocols can result in significant performance overhead. [...] [PDF]
Object-Oriented Programming, Systems, Languages & Applications (OOPSLA), 2019
Swift, an increasingly-popular programming language, advocates the use of protocols, which define a set of required methods and properties for conforming types. Protocols are commonly used in Swift programs for abstracting away implementation details; e.g., in a large industrial app from Uber, they are heavily used to enable mock objects for unit testing. Unfortunately, heavy use of protocols can result in significant performance overhead. [...] [PDF]
Object-Oriented Programming, Systems, Languages & Applications (OOPSLA), 2019
