1 files changed, 5 insertions, 1 deletions
diff --git a/src/function.rs b/src/function.rs
index 126477c..4daebf4 100644
--- a/src/function.rs
+++ b/src/function.rs
@@ -16,7 +16,11 @@ impl FunctionArgument {
     pub fn len(&self) -> usize {
         self.args.len()
     }
-    
+
+    pub fn is_empty(&self) -> bool {
+        self.args.len() == 0
+    }
+
     pub fn data(&self) -> &[Complex] {
         &self.args
     }