[pull] master from parallel101:master

slides/design/detected.md

@@ -0,0 +1,30 @@
+```cpp
+struct API {
+    bool is_device_ready(std::string dev_name);
+    void play_device(std::string dev_name);
+    void init_device(std::string dev_name);
+};
+
+if (api->is_device_ready("CD"))
+    api->play_device("CD");
+else
+    api->init_device("CD");
+```
+
+```cpp
+struct Device {
+    virtual bool is_ready() = 0;
+    virtual void play() = 0;
+    virtual void init() = 0;
+};
+
+struct API {
+    Device *get_device(std::string dev_name);
+};
+
+Device *dev = api->get_device("CD");
+if (dev->is_ready())
+    dev->play();
+else
+    dev->init();
+```

slides/move/main.cpp

@@ -13,7 +13,6 @@ struct IndentGuard {
     IndentGuard(IndentGuard &&) = delete;
 
     ~IndentGuard() {
-        puts("析构函数");
         indent = oldIndent;
     }
 

slides/move/main_manualres.cpp

@@ -0,0 +1,35 @@
+#include <cstdio>
+#include <cstdlib>
+#include <memory>
+
+using namespace std;
+
+struct Resource {
+    void *p;
+
+    Resource() {
+        puts("分配资源");
+        p = malloc(1);
+    }
+
+    Resource(Resource &&that) : p(that.p) {
+        that.p = nullptr;  // 一定要把对方置空！
+    }
+
+    Resource(Resource const &) = delete;
+
+    ~Resource() {
+        if (p) {
+            puts("释放资源");
+            free(p);
+        }
+    }
+};
+
+void func(Resource x) {
+}
+
+int main() {
+    auto x = Resource();
+    func(std::move(x));
+}

slides/move/main_resource.cpp

@@ -4,22 +4,6 @@
 
 using namespace std;
 
-//struct Resource {
-//    void *p;
-//
-//    Resource() {
-//        puts("分配资源");
-//        p = malloc(1);
-//    }
-//
-//    Resource(Resource &&) = delete;
-//
-//    ~Resource() {
-//        puts("释放资源");
-//        free(p);
-//    }
-//};
-
 struct Resource {
 private:
     struct Self {

slides/stream/CMakeLists.txt

@@ -0,0 +1,11 @@
+cmake_minimum_required(VERSION 3.12)
+
+set(CMAKE_CXX_STANDARD 23)
+
+project(main)
+
+set(SOURCES main.cpp)
+
+add_executable(main ${SOURCES})
+target_compile_options(main PRIVATE -Wall -Wextra)
+target_link_libraries(main PRIVATE criterion)