Working at the REPL

The Java2D backend provides a utility for working at the REPL (also known as the console). Using the following imports

import cats.effect.unsafe.implicits.global
import doodle.core.*
import doodle.java2d.repl.{*, given}
import doodle.syntax.all.*

(notice that doodle.java2d.{*, given} has changed to doodle.java2d.repl.{*, given}) will change the behaviour of the default Frame. Instead of waiting until the window is closed before returning control after drawing a Picture, control will return immediately. This is useful when working in the REPL and you want to quickly view pictures as you make changes.