From 7b7bf727da3250907284368b98b0083a4b4e2386 Mon Sep 17 00:00:00 2001
From: mryouse
Date: Sat, 3 Jun 2023 20:22:18 +0000
Subject: initial commit

---
 p99/p16.neb | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 p99/p16.neb

(limited to 'p99/p16.neb')

diff --git a/p99/p16.neb b/p99/p16.neb
new file mode 100644
index 0000000..e8fc459
--- /dev/null
+++ b/p99/p16.neb
@@ -0,0 +1,19 @@
+; P16 Drop every N'th element from a list.
+
+(def a (list "a" "b" "c" "d" "e" "f" "g" "h" "i" "k"))
+
+(func drop-n (lst n)
+    (drop-n lst n (list) n))
+
+(func drop-n (lst :nil n acc idx)
+    acc)
+
+(func drop-n (lst :{:any} n acc idx)
+    (if (eq? 1 idx)
+        (drop-n (rest lst) n acc n)  ; reset n, don't add to acc
+        (drop-n (rest lst) n (append acc (first lst)) (-- idx))))
+
+(func -- (num) (- num 1))
+
+(print (->string a))
+(print (->string (drop-n a 3)))
-- 
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