Update Isogram.fs with type signatures

exercism · Feb 8, 2024 · a1c1242 · a1c1242
1 parent 0276475
commit a1c1242
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/exercises/practice/isogram/Isogram.fs b/exercises/practice/isogram/Isogram.fs
@@ -1,3 +1,3 @@
 module Isogram
 
-let isIsogram str = failwith "You need to implement this function."
+let isIsogram (str: string): bool = failwith "You need to implement this function."