// 可选字符串判空

galaxy/galaxy/Classes/Tools/Extention/String+Extension.swift

@@ -30,6 +30,13 @@ extension String {
         }
         return nil
     }
+    
+    static func isEmpty(string: String?) -> Bool {
+        if let string = string, string.count > 0 {
+            return false
+        }
+        return true
+    }
 }
 
 extension String {