Merge pull request #28 from projectdiscovery/runtime-map-delete-key

Adding delete key helper for runtime map

runtime_map.go

@@ -1,6 +1,7 @@
 package goflags
 
 import (
+	"errors"
 	"fmt"
 	"strings"
 
@@ -44,6 +45,15 @@ func (runtimeMap *RuntimeMap) Set(value string) error {
 	return nil
 }
 
+// Del removes the specified key
+func (runtimeMap *RuntimeMap) Del(key string) error {
+	if runtimeMap.kv == nil {
+		return errors.New("empty runtime map")
+	}
+	delete(runtimeMap.kv, key)
+	return nil
+}
+
 // IsEmpty specifies if the underlying map is empty
 func (runtimeMap *RuntimeMap) IsEmpty() bool {
 	return runtimeMap.kv == nil || len(runtimeMap.kv) == 0