From 8c6095ea7a30175224c82227b1286c5f15856d1c Mon Sep 17 00:00:00 2001
From: Thomas von Dein <tom@vondein.org>
Date: Sun, 12 Nov 2023 13:49:09 +0100
Subject: [PATCH] add exists(), needs tuning

---
 util.go | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/util.go b/util.go
index 1cdd587..6a50ffa 100644
--- a/util.go
+++ b/util.go
@@ -33,6 +33,15 @@ func contains(s []string, e string) bool {
 	return false
 }
 
+func exists(m map[string]interface{}, item string) bool {
+	// FIXME: try to use this for all cases
+	if _, ok := m[item]; ok {
+		return true
+	}
+
+	return false
+}
+
 func const2num(name string) float64 {
 	switch name {
 	case "Pi":