g ∘ f patterns - (aka From Gof to lambda)

Pattern	Lambda
Command	Functions
Strategy	Functions
Template	Consumer
Observer	Consumer
Decorator	Functions composition
Chain of Resposibility	Stream of functions
Interpreter	Map of functions
Visitor	Pattern matching + Functions

by Mario Fusco

The video of talk where I implemented this patterns in a live coding session is available here.

Same patterns have also been reimplemented in Swift and Kotlin.