issue #284 add sample config for cpp project (cmp and cpp sample files)

playground/cpp/main.cpp

@@ -0,0 +1,43 @@
+#include <iostream>
+#include <string>
+#include <unordered_map>
+
+int main()
+{
+    // Create an unordered_map of three strings (that map to strings)
+    std::unordered_map<std::string, std::string> u =
+    {
+        {"RED", "#FF0000"},
+        {"GREEN", "#00FF00"},
+        {"BLUE", "#0000FF"}
+    };
+
+    // Helper lambda function to print key-value pairs
+    auto print_key_value = [](const auto& key, const auto& value)
+    {
+        std::cout << "Key:[" << key << "] Value:[" << value << "]\n";
+    };
+    std::cout << "Iterate and print key-value pairs of unordered_map, being\n"
+                 "explicit with their types:\n";
+    for (const std::pair<const std::string, std::string>& n : u)
+        print_key_value(n.first, n.second);
+    std::cout << "\nIterate and print key-value pairs using C++17 structured binding:\n";
+    for (const auto& [key, value] : u)
+        print_key_value(key, value);
+
+    // Add two new entries to the unordered_map
+    u["BLACK"] = "#000000";
+    u["WHITE"] = "#FFFFFF";
+
+    std::cout << "\nOutput values by key:\n"
+                 "The HEX of color RED is:[" << u["RED"] << "]\n"
+                 "The HEX of color BLACK is:[" << u["BLACK"] << "]\n\n";
+
+    std::cout << "Use operator[] with non-existent key to insert a new key-value pair:\n";
+    print_key_value("new_key", u["new_key"]);
+
+    std::cout << "\nIterate and print key-value pairs, using `auto`;\n"
+                 "new_key is now one of the keys in the map:\n";
+    for (const auto& n : u)
+        print_key_value(n.first, n.second);
+}

playground/init.lua

@@ -77,6 +77,36 @@ local function load_plugins()
         })
       end,
     },
+    {
+      'hrsh7th/nvim-cmp',
+      dependencies = {
+        'neovim/nvim-lspconfig',
+        'hrsh7th/cmp-nvim-lsp',
+      },
+      config = function ()
+        -- Add additional capabilities supported by nvim-cmp
+        local cmp = require 'cmp'
+        cmp.setup {
+          snippet = {
+            expand = function(args)
+              luasnip.lsp_expand(args.body)
+            end,
+          },
+          mapping = cmp.mapping.preset.insert({
+            ['<C-u>'] = cmp.mapping.scroll_docs(-4), -- Up
+            ['<C-d>'] = cmp.mapping.scroll_docs(4), -- Down
+            -- C-b (back) C-f (forward) for snippet placeholder navigation.
+            ['<C-Space>'] = cmp.mapping.complete(),
+            ['<CR>'] = cmp.mapping.confirm {
+              behavior = cmp.ConfirmBehavior.Replace,
+              select = true,
+            },}),
+          sources = {
+            { name = 'nvim_lsp' },
+          },
+        }
+      end,
+    },
     {
       'ray-x/go.nvim',
       dev = (plugin_folder() ~= ''),