model.bend source

model.bend on the hub · documented module

import Baseimport ./main.bend as B# Deliberately simple ordered list model. Never calls emit or finish.def join(a: List<&2,String>, b: List<&2,String>) -> List<&2,String>:  match a:    case Nil{}:      b    case Con{head, tail}:      Con{head, join(tail, b)}def flatten(parts: List<&2,String>) -> String:  match parts:    case Nil{}:      SNil{}    case Con{head, tail}:      String.append(head, flatten(tail))# Abstraction only; model operations above know nothing about the tree.def chunks(builder: B.Builder) -> List<&2,String>:  match builder:    case B.Empty{}:      Nil{}    case B.Chunk{text}:      Con{text, Nil{}}    case B.Join{left, right}:      join(chunks(left), chunks(right))