From 3e14cd47ccfb89e470abe6c814c295a3f8d62714 Mon Sep 17 00:00:00 2001
From: Noel Welsh <noel@noelwelsh.com>
Date: Fri, 25 Oct 2024 09:19:16 +0100
Subject: [PATCH] Fix compilation error and typo
---
book/src/pages/cycles/fun.md | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/book/src/pages/cycles/fun.md b/book/src/pages/cycles/fun.md
index bd107f07..79c57d73 100644
--- a/book/src/pages/cycles/fun.md
+++ b/book/src/pages/cycles/fun.md
@@ -58,14 +58,13 @@ def redCircle(n: Int): Image =
Image.circle(100 + 24*n).strokeColor(Color.red)
val redCircles: Image =
- concentricShapes(10, redCircle _)
+ concentricShapes(10, redCircle)
```
@:figure{ img = "./red-black-circles.svg", key = "#fig:cycles:red-black-circles", caption = "Black and Red Concentric Circles" }
-You might notice two things about this example: we're not using function composition, and we duplication in the definitions.
+You might notice two things about this example: we're not using function composition, and we have duplication in the definitions.
In both cases we draw circles, but they differ in color.
-No problem.
This feels like a problem we can solve with function composition.
Let's give it a go.
@@ -91,7 +90,7 @@ def strokeColor(color: Color): Image => Image =
With this we can construct the functions we need.
-```scala mdoc:silent
+```scala mdoc:silent:nest
val blackCircle = circle // Black is the default stroke
val redCircle = size.andThen(circle).andThen(strokeColor(Color.red))
```