From 1efc67121314400c4886fbaf019a53cd8457a6d3 Mon Sep 17 00:00:00 2001
From: Sanchime <sanchime.qq.com>
Date: Sat, 14 May 2022 10:00:24 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=E5=AD=97=E5=85=B8=E6=89=A9?=
 =?UTF-8?q?=E5=B1=95?=
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---
 Sanchime.Functional/Extensions/Dictionary.cs | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 Sanchime.Functional/Extensions/Dictionary.cs

diff --git a/Sanchime.Functional/Extensions/Dictionary.cs b/Sanchime.Functional/Extensions/Dictionary.cs
new file mode 100644
index 0000000..dac608d
--- /dev/null
+++ b/Sanchime.Functional/Extensions/Dictionary.cs
@@ -0,0 +1,12 @@
+using Sanchime.Functional.Products;
+
+namespace Sanchime.Functional.Extensions;
+
+/// <summary>
+/// 字典扩展
+/// </summary>
+public static class DictionaryExtension
+{
+    public static Option<T> Lookup<K, T>(this Dictionary<K, T> dictionary, K key)  where K: notnull
+        => dictionary.TryGetValue(key, out T? value) ? Option.Some(value) : Option.None;
+}