From 7cba7d11171a62c618b0187d2c6dd32b45740303 Mon Sep 17 00:00:00 2001
From: brent s <bts@square-r00t.net>
Date: Sun, 29 May 2022 22:52:03 -0400
Subject: [PATCH] Adding env.HasEnv for single-value env exist logic

---
 envs/funcs.go | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/envs/funcs.go b/envs/funcs.go
index 3fb22b9..3bc32de 100644
--- a/envs/funcs.go
+++ b/envs/funcs.go
@@ -118,3 +118,17 @@ func GetPidEnvMapNative(pid uint32) (envMap map[string]interface{}, err error) {
 
 	return
 }
+
+/*
+	HasEnv is much like os.LookupEnv, but only returns a boolean for
+	if the environment variable key exists or not.
+
+	This is useful anywhere you may need to set a boolean in a func call
+	depending on the *presence* of an env var or not.
+*/
+func HasEnv(key string) (envIsSet bool) {
+
+	_, envIsSet = os.LookupEnv(key)
+
+	return
+}