Update: Using C++26 with contracts enabled

CMakePresets.json

@@ -10,11 +10,21 @@
       "name": "default",
       "displayName": "GCC 16 + C++26",
       "generator": "Unix Makefiles",
-      "binaryDir": "${sourceDir}/build",
+      "binaryDir": "${sourceDir}/cmake-build-debug-gcc-16-cpp26",
+      "toolchainFile": "${sourceDir}/cmake/toolchains/gcc-16.cmake",
       "cacheVariables": {
         "CMAKE_BUILD_TYPE": "Debug",
-        "CMAKE_C_COMPILER": "/opt/homebrew/bin/gcc-16",
-        "CMAKE_CXX_COMPILER": "/opt/homebrew/bin/g++-16",
+        "COURSE_ENABLE_CONTRACTS": "ON"
+      }
+    },
+    {
+      "name": "release",
+      "displayName": "GCC 16 + C++26 (Release)",
+      "generator": "Unix Makefiles",
+      "binaryDir": "${sourceDir}/cmake-build-release-gcc-16-cpp26",
+      "toolchainFile": "${sourceDir}/cmake/toolchains/gcc-16.cmake",
+      "cacheVariables": {
+        "CMAKE_BUILD_TYPE": "Release",
         "COURSE_ENABLE_CONTRACTS": "ON"
       }
     }
@@ -23,6 +33,10 @@
     {
       "name": "default",
       "configurePreset": "default"
+    },
+    {
+      "name": "release",
+      "configurePreset": "release"
     }
   ],
   "testPresets": [