From 01f2a94117fd62e07a29c4c586ba8f3cd206d664 Mon Sep 17 00:00:00 2001
From: Graham Carlyle <graham@grahamcarlyle.com>
Date: Mon, 27 Jul 2020 19:26:05 +0100
Subject: [PATCH] Describe non-printing of returned nil [skip ci] (#514)

---
 README.md | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/README.md b/README.md
index ab26c863..314e5243 100644
--- a/README.md
+++ b/README.md
@@ -782,6 +782,18 @@ with `lein repl`:
 (nrepl-eval 52054 "(+ 1 2 3)") ;;=> "6"
 ```
 
+## Printing returned values
+
+Babashka doesn't print a returned `nil` as lots of scripts end in something side-effecting.
+
+``` shell
+$ bb '(:a {:a 5}'
+5
+$ bb '(:b {:a 5}'
+$
+```
+If you really want to print the nil, you can use `(prn ..)` instead.
+
 ## Differences with Clojure
 
 Babashka is implemented using the [Small Clojure