Update docs/higher-order-functions.md

AndrewLipscomb · mattbaileyuk · web-flow · commit 389cc85872e8 · 2025-07-24T10:08:36.000+10:00
Co-authored-by: Matt Bailey &lt;mattbaileyuk@users.noreply.github.com&gt;
diff --git a/docs/higher-order-functions.md b/docs/higher-order-functions.md
@@ -31,7 +31,7 @@ evaluates to
 4
 ```
 
-If the input argument is an empty array, returns `undefined`
+If the input argument is an empty array, returns nothing (represented in Javascript as `undefined`)
 
 The function that is supplied as the second parameter must have the following signature:
 

Original file line number	Diff line number	Diff line change
`@@ -31,7 +31,7 @@ evaluates to`
`31`	`31`	`4`
`32`	`32`	```
`33`	`33`
`34`		-If the input argument is an empty array, returns `undefined`
	`34`	+If the input argument is an empty array, returns nothing (represented in Javascript as `undefined`)
`35`	`35`
`36`	`36`	`The function that is supplied as the second parameter must have the following signature:`
`37`	`37`