Add VSCode configuration files for debugging and building with CMake; refactor main.cpp to clean up includes

.vscode/launch.json

@@ -0,0 +1,16 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Debug",
+            "type": "lldb",
+            "request": "launch",
+            "program": "${command:cmake.launchTargetPath}",
+            "args": [],
+            // CHANGE THIS LINE:
+            // Point the working directory to the folder containing the executable
+            "cwd": "${command:cmake.launchTargetDirectory}",
+            "preLaunchTask": "CMake: build"
+        }
+    ]
+}

.vscode/tasks.json

@@ -1,17 +1,24 @@
 {
-  "version": "2.0.0",
-  "tasks": [
-    {
-      "label": "CMake: Configure",
-      "type": "shell",
-      "command": "cmake -S . -B build -DCMAKE_EXPORT_COMPILE_COMMANDS=ON",
-      "problemMatcher": []
-    },
-    {
-      "label": "CMake: Build",
-      "type": "shell",
-      "command": "cmake --build build -- -j",
-      "problemMatcher": []
-    }
-  ]
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "CMake: build",
+            "type": "shell",
+            "command": "/usr/bin/cmake",
+            "args": [
+                "--build",
+                "${workspaceFolder}/build",
+                "--config",
+                "Debug",
+                "--target",
+                "${command:cmake.buildTargetName}" 
+            ],
+            "group": {
+                "kind": "build",
+                "isDefault": true
+            },
+            "problemMatcher": "$gcc",
+            "detail": "Builds the target currently selected in the CMake status bar"
+        }
+    ]
 }

day4/main.cpp

@@ -1,18 +1,12 @@
-#include <algorithm>
 #include <array>
 #include <cstddef>
 #include <expected>
 #include <fstream>
-#include <functional>
 #include <iostream>
-#include <iterator>
-#include <map>
 #include <mdspan>
-#include <numeric>
 #include <print>
 #include <ranges>
 #include <string>
-#include <string_view>
 #include <vector>
 
 struct Diagram {
@@ -25,6 +19,7 @@ struct Diagram {
     auto grid() { return GridView(data.data(), height, width); }
 };
 
+namespace {
 auto printMap(Diagram &diagram) {
     auto grid = diagram.grid();
     for (auto row = 0UZ; row != grid.extent(0); row++) {
@@ -37,7 +32,6 @@ auto printMap(Diagram &diagram) {
     std::println("Width: {}", diagram.width);
     std::println("Height: {}", diagram.height);
 }
-
 auto parseMap(const std::string &filename) -> std::expected<Diagram, std::string> {
     std::ifstream inputF{filename};
 
@@ -143,7 +137,7 @@ auto moveMoveablePaper(Diagram &diagram) -> long {
 
     return totalPaperRemoved;
 }
-
+} // namespace
 auto main() -> int {
     auto testCase = parseMap("test_input");
     if (testCase) {