Phil Bagwell (died 6 October 2012[1]) was a computer scientist known for his work and influence in the area of persistent data structures.
He is best known for his 2000 invention of hash array mapped tries.
[2] Bagwell was probably the most influential researcher in the field of persistent data structures from 2000 until his death.
His work is now a standard part of the runtimes of functional programming languages including Clojure, Scala, and Haskell.
[3] His contributions to building the Scala community are remembered in the Phil Bagwell Memorial Scala Community Award.