Nest all content into snippets

snippets/python/s/min-by.md

@@ -0,0 +1,22 @@
+---
+title: Min list value based on function
+type: snippet
+language: python
+tags: [math,list]
+cover: purple-flower-field
+dateModified: 2020-11-02T19:28:27+02:00
+---
+
+Returns the minimum value of a list, after mapping each element to a value using the provided function.
+
+- Use `map()` with `fn` to map each element to a value using the provided function.
+- Use `min()` to return the minimum value.
+
+```py
+def min_by(lst, fn):
+  return min(map(fn, lst))
+```
+
+```py
+min_by([{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }], lambda v : v['n']) # 2
+```