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+### all_unique
+
+Checks a flat list for all unique values. Returns True if list values are all unique and False if list values aren't all unique.
+
+This function compares the length of the list with length of the set() of the list. set() removes duplicate values from the list.
+
+``` python
+def all_unique(lst):
+    return len(lst) == len(set(lst))
+```
+
+``` python
+x = [1,2,3,4,5,6]
+all_unique(x) # result
+True
+```
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diff --git a/snippets/has_duplicates.md b/snippets/has_duplicates.md
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+### has_duplicates
+
+Checks a flat list for duplicate values. Returns True if duplicate values exist and False if values are all unique.
+
+This function compares the length of the list with length of the set() of the list. set() removes duplicate values from the list.
+
+``` python
+def has_duplicates(lst):
+    return len(lst) != len(set(lst))
+```
+
+``` python
+x = [1,2,3,4,5,5]
+has_duplicates(x) # result
+True
+```