From 92b0833444f85927d0414f19c1ce2be28da30b66 Mon Sep 17 00:00:00 2001
From: Liam Stanley <me@liamstanley.io>
Date: Sat, 27 Jan 2018 06:58:54 -0500
Subject: [PATCH] add Tags.Equals() and Tags.Keys() methods

---
 cap.go | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/cap.go b/cap.go
index 1d50460..31ce6c6 100644
--- a/cap.go
+++ b/cap.go
@@ -441,6 +441,28 @@ func (t Tags) Len() (length int) {
 	return len(t.Bytes())
 }
 
+// Equals compares two Tags for equality.
+func (t Tags) Equals(tt Tags) bool {
+	if t.Count() != tt.Count() {
+		return false
+	}
+	for k, v := range t {
+		if vv, ok := tt[k]; !ok || v != vv {
+			return false
+		}
+	}
+	return true
+}
+
+// Keys returns a slice of (unsorted) tag keys.
+func (t Tags) Keys() (keys []string) {
+	keys = make([]string, 0, t.Count())
+	for key := range t {
+		keys = append(keys, key)
+	}
+	return keys
+}
+
 // Count finds how many total tags that there are.
 func (t Tags) Count() int {
 	if t == nil {