Add is empty

snippets/is_empty.md

@@ -0,0 +1,29 @@
+---
+title: Collection is empty
+tags: list,dictionary,string
+author: chalarangelo
+cover: blog_images/salad-1.jpg
+firstSeen: 2023-01-12T05:00:00-04:00
+---
+
+Checks if the a value is an empty sequence or collection.
+
+- Use `not` to test the truth value of the provided sequence or collection.
+
+```py
+def is_empty(val):
+  return not val
+```
+
+```py
+is_empty([]) # True
+is_empty({}) # True
+is_empty('') # True
+is_empty(set()) # True
+is_empty(range(0)) # True
+is_empty([1, 2]) # False
+is_empty({ 'a': 1, 'b': 2 }) # False
+is_empty('text') # False
+is_empty(set([1, 2])) # False
+is_empty(range(2)) # False
+```