feat: add if/switch

CMakeLists.txt

@@ -12,7 +12,8 @@ include(ExportCompileCommands)
 configure_file("${PROJECT_SOURCE_DIR}/include/version.h.in"
                "${PROJECT_BINARY_DIR}/include/version.h")
 
-add_executable(hello src/main.cpp src/null.cpp src/constexp.cpp)
+add_executable(hello src/main.cpp src/null.cpp src/constexp.cpp
+                     src/ifswitch.cpp)
 
 target_compile_features(hello PUBLIC cxx_std_20)
 

include/ifswitch.h

@@ -0,0 +1,7 @@
+#pragma once
+
+namespace ifswitch {
+
+void test();
+
+};

src/ifswitch.cpp

@@ -0,0 +1,25 @@
+#include <algorithm>
+#include <cstdint>
+#include <iostream>
+#include <vector>
+
+#include "ifswitch.h"
+
+void ifswitch::test() {
+  std::vector<uint32_t> vec = {1, 2, 3, 4};
+
+  if (auto it = std::find(vec.begin(), vec.end(), 23); it != vec.end()) {
+    std::cout << "Found element 23 in vector" << std::endl;
+  } else {
+    std::cout << "No element 23 in vector" << std::endl;
+  }
+
+  switch (auto it = vec.rbegin(); *it) {
+  case 4:
+    std::cout << "Found 4 at the back" << std::endl;
+    break;
+  default:
+    std::cout << "No 4 at the back" << std::endl;
+    break;
+  }
+}

src/main.cpp

@@ -4,6 +4,7 @@
 #include "version.h"
 
 #include "constexp.h"
+#include "ifswitch.h"
 #include "null.h"
 
 int main(int argc, char **argv) {
@@ -18,6 +19,10 @@ int main(int argc, char **argv) {
             << "Constexpr test:" << std::endl;
   constexp::test();
 
+  std::cout << "\n"
+            << "Ifswitch test:" << std::endl;
+  ifswitch::test();
+
   std::cout << "\nExiting" << std::endl;
 
   return EXIT_SUCCESS;