.NET/F# Term: Builder-Pattern

F#’s computation expressions represent one of the language’s crown jewels - a unified syntax that makes complex control flow feel as natural as writing straight-line code. Yet beneath this syntactic elegance lies a mathematical structure that most compilers never fully exploit. In the Fidelity framework, we highlight that most CEs naturally decomposes into one of two fundamental patterns: delimited continuations for sequential effects, or interaction nets for true parallelism. This isn’t just optimization; it’s a recognition of an essential duality that enables us to develop a compilation path that yields true zero-cost computation graphs.