vault backup: 2022-06-12 18:31:15

Affected files:
.obsidian/workspace
02. PARA/03. Resources（資源）/C++17/lambda.md

.obsidian/workspace

@@ -9,7 +9,7 @@
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@@ -69,7 +69,7 @@
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@@ -86,7 +86,7 @@
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-                "file": "00. TOP/01. TODO.md"
+                "file": "02. PARA/03. Resources（資源）/C++17/lambda.md"
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@@ -116,6 +116,7 @@
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     "02. PARA/01. Project（專案）/008. Sentinel.md",
@@ -124,7 +125,6 @@
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-    "attachments/92709501_101757388184474_261941160505769984_o.jpg",
-    "attachments/2018-10-0912.49.30.png"
+    "attachments/92709501_101757388184474_261941160505769984_o.jpg"
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 }

02. PARA/03. Resources（資源）/C++17/lambda.md

@@ -0,0 +1,19 @@
+---
+tags: 
+aliases: 
+date: 2022-06-12 
+time: 18:21:42
+description: 
+---
+
+一個簡單的 Lamdba 運算式：
+```cpp
+[] (int x, int y) -> bool {
+    return x < y;
+}
+```
+
+- 以中括號開頭，中括號被稱為*lamdba 導入器（lamdba introducer）*
+- 小括號裡面是*lamdba 參數列表（lambda parameter list）*
+- 如果沒有參數，小括號可以省略，`[] () {...}` 可以簡寫成 `[] {...}`
+- 箭號（`->`）後面是回傳的型別，如果沒寫就由 `return` 自動推斷