From d1c10e8564d2c2e790d71f34d7cfb0c939153505 Mon Sep 17 00:00:00 2001
From: Angelos Chalaris <chalarangelo@gmail.com>
Date: Tue, 20 Aug 2019 15:42:41 +0300
Subject: [PATCH] Add min_by and max_by snippets

---
 snippets/max_by.md | 17 +++++++++++++++++
 snippets/min_by.md | 17 +++++++++++++++++
 2 files changed, 34 insertions(+)
 create mode 100644 snippets/max_by.md
 create mode 100644 snippets/min_by.md

diff --git a/snippets/max_by.md b/snippets/max_by.md
new file mode 100644
index 000000000..0699975e0
--- /dev/null
+++ b/snippets/max_by.md
@@ -0,0 +1,17 @@
+---
+title: max_by
+tags: math,list,function,beginner
+---
+
+Returns the maximum 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, convert to a `list` and use `max()` to return the maximum value.
+
+```py
+def max_by(lst, fn):
+  return max(list(map(fn,lst)))
+```
+
+```py
+max_by([{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }], lambda v : v['n']) # 8
+```
diff --git a/snippets/min_by.md b/snippets/min_by.md
new file mode 100644
index 000000000..75c63bf76
--- /dev/null
+++ b/snippets/min_by.md
@@ -0,0 +1,17 @@
+---
+title: min_by
+tags: math,list,function,beginner
+---
+
+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, convert to a `list` and use `min()` to return the minimum value.
+
+```py
+def min_by(lst, fn):
+  return min(list(map(fn,lst)))
+```
+
+```py
+min_by([{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }], lambda v : v['n']) # 2
+```