1

Author: code1009

web/mainmenu.js

@@ -36,7 +36,9 @@ class MainMenu {
 		this._Menu.addDataItem("/윈도우즈 프로그래밍",        "../page-WinUI3/page.html");
 		this._Menu.addDataItem("/윈도우즈 프로그래밍/WinUI3", "../page-WinUI3/page.html");
 
-		this._Menu.addDataItem("/C++/문서", "../page-cpp-doc/page.html");
+		this._Menu.addDataItem("/C++"         , "../page-cpp-doc/page.html");
+		this._Menu.addDataItem("/C++/문서"     , "../page-cpp-doc/page.html");
+		this._Menu.addDataItem("/C++/코드 조각" , "../page-cpp-code-snippet/page.html");
 	}
 
 	initializeMenu() {

web/page-cpp-code-snippet/page-cpp-code-snippet-coroutine.md

@@ -0,0 +1,135 @@
+# C++ 코드 조각
+
+
+## coroutine
+
+### 설명
+
+* [https://cppreference.com/w/cpp/coroutine.html](https://cppreference.com/w/cpp/coroutine.html)
+
+
+### 예제
+
+```C++
+
+#include <coroutine>
+#include <iostream>
+#include <optional>
+ 
+template<std::movable T>
+class Generator
+{
+public:
+    struct promise_type
+    {
+        Generator<T> get_return_object()
+        {
+            return Generator{Handle::from_promise(*this)};
+        }
+        static std::suspend_always initial_suspend() noexcept
+        {
+            return {};
+        }
+        static std::suspend_always final_suspend() noexcept
+        {
+            return {};
+        }
+        std::suspend_always yield_value(T value) noexcept
+        {
+            current_value = std::move(value);
+            return {};
+        }
+        // Disallow co_await in generator coroutines.
+        void await_transform() = delete;
+        [[noreturn]]
+        static void unhandled_exception() { throw; }
+ 
+        std::optional<T> current_value;
+    };
+ 
+    using Handle = std::coroutine_handle<promise_type>;
+ 
+    explicit Generator(const Handle coroutine) :
+        m_coroutine{coroutine}
+    {}
+ 
+    Generator() = default;
+    ~Generator()
+    {
+        if (m_coroutine)
+            m_coroutine.destroy();
+    }
+ 
+    Generator(const Generator&) = delete;
+    Generator& operator=(const Generator&) = delete;
+ 
+    Generator(Generator&& other) noexcept :
+        m_coroutine{other.m_coroutine}
+    {
+        other.m_coroutine = {};
+    }
+    Generator& operator=(Generator&& other) noexcept
+    {
+        if (this != &other)
+        {
+            if (m_coroutine)
+                m_coroutine.destroy();
+            m_coroutine = other.m_coroutine;
+            other.m_coroutine = {};
+        }
+        return *this;
+    }
+ 
+    // Range-based for loop support.
+    class Iter
+    {
+    public:
+        void operator++()
+        {
+            m_coroutine.resume();
+        }
+        const T& operator*() const
+        {
+            return *m_coroutine.promise().current_value;
+        }
+        bool operator==(std::default_sentinel_t) const
+        {
+            return !m_coroutine || m_coroutine.done();
+        }
+ 
+        explicit Iter(const Handle coroutine) :
+            m_coroutine{coroutine}
+        {}
+ 
+    private:
+        Handle m_coroutine;
+    };
+ 
+    Iter begin()
+    {
+        if (m_coroutine)
+            m_coroutine.resume();
+        return Iter{m_coroutine};
+    }
+ 
+    std::default_sentinel_t end() { return {}; }
+ 
+private:
+    Handle m_coroutine;
+};
+ 
+template<std::integral T>
+Generator<T> range(T first, const T last)
+{
+    while (first < last)
+        co_yield first++;
+}
+ 
+int main()
+{
+    for (const char i : range(65, 91))
+        std::cout << i << ' ';
+    std::cout << '\n';
+}
+
+```

web/page-cpp-code-snippet/page-cpp-code-snippet-std_format.md

@@ -0,0 +1,85 @@
+# C++ 코드 조각
+
+
+## std::format
+
+### 설명
+
+* [https://cppreference.com/w/cpp/coroutine.html](https://cppreference.com/w/cpp/coroutine.html)
+
+
+### 예제
+
+* 코드
+
+```C++
+
+#include <algorithm>
+#include <format>
+#include <iomanip>
+#include <iostream>
+#include <sstream>
+#include <string_view>
+ 
+struct QuotableString : std::string_view
+{};
+ 
+template<>
+struct std::formatter<QuotableString, char>
+{
+    bool quoted = false;
+ 
+    template<class ParseContext>
+    constexpr ParseContext::iterator parse(ParseContext& ctx)
+    {
+        auto it = ctx.begin();
+        if (it == ctx.end())
+            return it;
+ 
+        if (*it == '#')
+        {
+            quoted = true;
+            ++it;
+        }
+        if (it != ctx.end() && *it != '}')
+            throw std::format_error("Invalid format args for QuotableString.");
+ 
+        return it;
+    }
+ 
+    template<class FmtContext>
+    FmtContext::iterator format(QuotableString s, FmtContext& ctx) const
+    {
+        std::ostringstream out;
+        if (quoted)
+            out << std::quoted(s);
+        else
+            out << s;
+ 
+        return std::ranges::copy(std::move(out).str(), ctx.out()).out;
+    }
+};
+ 
+int main()
+{
+    QuotableString a("be"), a2(R"( " be " )");
+    QuotableString b("a question");
+    std::cout << std::format("To {0} or not to {0}, that is {1}.\n", a, b);
+    std::cout << std::format("To {0:} or not to {0:}, that is {1:}.\n", a, b);
+    std::cout << std::format("To {0:#} or not to {0:#}, that is {1:#}.\n", a2, b);
+}
+
+```
+
+
+* 출력
+
+```
+To be or not to be, that is a question.
+To be or not to be, that is a question.
+To " \" be \" " or not to " \" be \" ", that is "a question".
+```
+
+
+
+

web/page-cpp-code-snippet/page.css

@@ -0,0 +1,3 @@
+@charset "utf-8";
+
+

web/page-cpp-code-snippet/page.html

@@ -0,0 +1,60 @@
+<!DOCTYPE html>
+<html>
+<head>
+
+	<meta charset="utf-8" />
+	<title>code1009</title>
+	<link rel="stylesheet" type="text/css" href="../core.css" />
+	<link rel="stylesheet" type="text/css" href="../menu.css" />
+	<link rel="stylesheet" type="text/css" href="./page.css" />
+	<script type="text/javascript" src="../core.js"></script>
+	<script type="text/javascript" src="../menu.js"></script>
+	<script type="text/javascript" src="../mainmenu.js"></script>
+	<script type="text/javascript" src="../markdown.js"></script>
+	<script type="text/javascript" src="./submenu.js"></script>
+	<script type="text/javascript" src="./page.js"></script>
+
+</head>
+<body>
+
+	<div id="page-container">
+
+		<div id="page-information"></div>
+
+		<div id="page-resizer"></div>
+
+		<div id="page-contents">
+			<div id="subMenu" class="menu"></div>
+			<br />
+			<div id="page-markdown-view">
+			</div>
+		</div>
+
+	</div>
+
+	<script>
+		function getMarkDownFileURL() {
+			const params = new URLSearchParams(window.location.search);
+			const page = params.get("page");
+			return page ? `./${page}.md` : "./page1.md";
+		}
+
+		function initializeMarkdwonView() {
+			const view = document.getElementById("page-markdown-view");
+			if (!view) {
+				return;
+			}
+
+			const markdownFileURL = getMarkDownFileURL();
+
+			loadMarkDownScript(
+				function () {
+					renderMarkdwon("page-markdown-view", markdownFileURL);
+				}
+			);
+		}
+		
+		initializeMarkdwonView();
+	</script>
+</body>
+</html>

web/page-cpp-code-snippet/page.js

@@ -0,0 +1,54 @@
+/////////////////////////////////////////////////////////////////////////////
+//===========================================================================
+"use strict";
+
+
+
+
+
+/////////////////////////////////////////////////////////////////////////////
+//===========================================================================
+class Page {
+
+	#Context = null;
+	
+	constructor() {
+		this.#Context = null;
+	}
+}
+
+
+
+
+
+/////////////////////////////////////////////////////////////////////////////
+//===========================================================================
+var _Page = null;
+
+
+
+
+
+/////////////////////////////////////////////////////////////////////////////
+//===========================================================================
+function initializePage() {
+	_Page = new Page();
+}
+
+
+
+
+
+/////////////////////////////////////////////////////////////////////////////
+//===========================================================================
+window.onload = function () {
+	initializeCore();
+	initializePage();
+
+	initializePageInformation();
+	initializeMainMenu();
+
+	initializeSubMenu();
+}
+
+

web/page-cpp-code-snippet/page1.md

@@ -0,0 +1,37 @@
+# C++ 코드 조각
+
+
+## "Hello World!
+
+### 설명
+
+* [https://cppreference.com/)
+
+
+### 예제
+
+* 코드
+
+```C++
+
+#include <iostream>
+using namespace std;
+ 
+int main() {
+    cout << "Hello World!" << endl;
+    return 0;
+}
+
+```
+
+
+* 출력
+
+```
+Hello World!
+
+```
+
+
+
+