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Update consolidated snippets
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‎public/consolidated/cpp.json

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[
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{
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"categoryName": "Array Manipulation",
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"snippets": [
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{
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"title": "Filter Vector",
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"description": "Filters a vector using a predicate function.",
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"author": "majvax",
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"tags": [
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"array",
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"filter",
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"c++23"
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],
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"contributors": [],
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"code": "#include <ranges>\n#include <vector>\n\ntemplate <typename T, typename P>\nauto filter(const std::vector<T>& vec, P&& predicate) {\n return vec\n | std::views::filter(std::forward<P>(predicate))\n | std::ranges::to<std::vector<T>>();\n}\n\n\n\n// Usage:\nstd::vector<int> vec = {1, 2, 3, 4, 5};\nstd::vector<int> filtered = filter(vec, [](int i){ return i % 2 == 0; });\n// filtered contains 2 and 4\n"
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},
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{
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"title": "Transform Vector",
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"description": "Transforms a vector using a function.",
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"author": "majvax",
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"tags": [
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"array",
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"transform",
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"c++23"
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],
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"contributors": [],
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"code": "#include <ranges>\n#include <vector>\n\ntemplate <typename T, typename F>\nauto transform(const std::vector<T>& vec, F&& transformer) {\n using U = std::invoke_result_t<F, T>;\n return vec\n | std::views::transform(std::forward<F>(transformer))\n | std::ranges::to<std::vector<U>>();\n}\n\n\n\n// Usage:\nstd::vector<int> vec = {1, 2, 3, 4, 5};\nstd::vector<int> transformed = transform(vec, [](int i){ return i * 2; });\n// transformed contains 2, 4, 6, 8, 10\n"
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}
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]
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},
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{
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"categoryName": "Basics",
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"snippets": [
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}
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]
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},
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{
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"categoryName": "File Handling",
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"snippets": [
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{
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"title": "Find files recursively",
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"description": "Find all the files in a directory and subdirectories using a predicate function.",
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"author": "majvax",
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"tags": [
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"filesystem",
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"file_search",
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"c++17"
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],
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"contributors": [],
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"code": "#include <filesystem>\n#include <vector>\n#include <string>\n\ntemplate <typename P>\nstd::vector<std::filesystem::path> find_files_recursive(const std::string& path, P&& predicate) {\n std::vector<std::filesystem::path> files;\n std::error_code ec;\n\n if (!std::filesystem::exists(path, ec) || ec)\n return files;\n if (!std::filesystem::is_directory(path, ec) || ec)\n return files;\n\n auto it = std::filesystem::recursive_directory_iterator(path, ec);\n if (ec)\n return files;\n\n for (const auto& entry : it)\n if (!std::filesystem::is_directory(entry) && predicate(entry.path()))\n files.push_back(entry.path());\n\n return files;\n}\n\n\n\n// Usage:\n\n// Find all files with size greater than 10MB\nauto files = find_files_recursive(\"Path\", [](const auto& p) {\n return std::filesystem::file_size(p) > 10 * 1024 * 1024;\n});\n\n// Find all files with \".pdf\" as extension\nauto files = find_files_recursive(\"Path\", [](const auto& p) {\n return p.extension() == \".pdf\";\n});\n\n// Find all files writed after The New Year\n#include <chrono>\n// need std=c++20\nauto jan_1_2025 = std::filesystem::file_time_type::clock::from_sys(\n std::chrono::sys_days{std::chrono::year{2025}/std::chrono::month{1}/std::chrono::day{1}}\n);\nauto files = find_files_recursive(\"Path\", [jan_1_2025](const auto& p) {\n return std::filesystem::last_write_time(p) > jan_1_2025;\n}),\n"
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},
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{
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"title": "Find files",
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"description": "Find all the files in a directory using a predicate function.",
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"author": "majvax",
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"tags": [
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"filesystem",
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"file_search",
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"c++17"
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],
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"contributors": [],
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"code": "#include <filesystem>\n#include <vector>\n#include <string>\n\ntemplate <typename P>\nstd::vector<std::filesystem::path> find_files(const std::string& path, P&& predicate) {\n std::vector<std::filesystem::path> files;\n std::error_code ec;\n\n if (!std::filesystem::exists(path, ec) || ec)\n return files;\n if (!std::filesystem::is_directory(path, ec) || ec)\n return files;\n\n auto it = std::filesystem::directory_iterator(path, ec);\n if (ec)\n return files;\n\n for (const auto& entry : it)\n if (!std::filesystem::is_directory(entry) && predicate(entry.path()))\n files.push_back(entry.path());\n\n return files;\n}\n\n\n\n// Usage:\n\n// Find all files with size greater than 10MB\nauto files = find_files(\"Path\", [](const auto& p) {\n return std::filesystem::file_size(p) > 10 * 1024 * 1024;\n});\n\n// Find all files with \".pdf\" as extension\nauto files = find_files(\"Path\", [](const auto& p) {\n return p.extension() == \".pdf\";\n});\n\n// Find all files writed after The New Year\n#include <chrono>\n// need std=c++20\nauto jan_1_2025 = std::filesystem::file_time_type::clock::from_sys(\n std::chrono::sys_days{std::chrono::year{2025}/std::chrono::month{1}/std::chrono::day{1}}\n);\nauto files = find_files(\"Path\", [jan_1_2025](const auto& p) {\n return std::filesystem::last_write_time(p) > jan_1_2025;\n}),\n"
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},
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{
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"title": "List Directories",
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"description": "Lists all the directories in a path.",
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"author": "majvax",
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"tags": [
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"filesystem",
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"directories",
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"c++17"
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],
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"contributors": [],
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"code": "#include <filesystem>\n#include <vector>\n#include <string>\n\nstd::vector<std::filesystem::path> list_directories(const std::string& path) {\n std::vector<std::filesystem::path> files;\n std::error_code ec;\n\n if (!std::filesystem::exists(path, ec) || ec)\n return files;\n if (!std::filesystem::is_directory(path, ec) || ec)\n return files;\n\n auto it = std::filesystem::directory_iterator(path, ec);\n if (ec)\n return files;\n\n for (const auto& entry : it)\n if (std::filesystem::is_directory(entry))\n files.push_back(entry.path());\n\n return files;\n}\n\n\n\n// Usage:\nauto directories = list_directories(\"Path\");\n"
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}
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]
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},
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{
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"categoryName": "Math And Numbers",
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"snippets": [
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{
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"categoryName": "String Manipulation",
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"snippets": [
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{
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"title": "Filter",
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"description": "Filter a string with a predicate function",
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"author": "majvax",
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"tags": [
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"string",
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"filtering",
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"c++23"
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],
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"contributors": [],
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"code": "#include <ranges>\n#include <string>\n\ntemplate <typename P>\nstd::string filter(const std::string& str, P&& predicate) {\n return str\n | std::ranges::views::filter(std::forward<P>(predicate))\n | std::ranges::to<std::string>();\n}\n\n\n\n// Usage:\nstd::string str = \"Hello, World!\";\nstd::string filtered = filter(str, [](char c){ return std::isalpha(c); });\nstd::cout << filtered << std::endl; // HelloWorld\n"
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},
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{
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"title": "Palindrome",
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"description": "Check if a string is a palindrome or not.",
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"author": "majvax",
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"tags": [
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"string",
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"c++23"
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],
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"contributors": [],
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"code": "#include <string>\n#include <ranges>\n#include <algorithm>\n\nbool is_palindrome(const std::string& str) {\n std::string sanitized_string = str\n | std::ranges::views::filter([](char c){ return std::isalnum(c); })\n | std::ranges::views::transform([](char c){ return std::tolower(c); })\n | std::ranges::to<std::string>();\n \n return std::ranges::equal(sanitized_string, sanitized_string | std::views::reverse);\n}\n\n\n\n// Usage:\nbool pal = is_palindrome(\"A man, a plan, a canal, Panama\"); // true\n"
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},
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{
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"title": "Reverse String",
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"description": "Reverses the characters in a string.",
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"author": "Vaibhav-kesarwani",
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"tags": [
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"array",
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"reverse"
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"reverse",
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"c++23"
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],
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"contributors": [],
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"code": "#include <string>\n#include <algorithm>\n\nstd::string reverseString(const std::string& input) {\n std::string reversed = input;\n std::reverse(reversed.begin(), reversed.end());\n return reversed;\n}\n\nreverseString(\"quicksnip\"); // Returns: \"pinskciuq\"\n"
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],
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"contributors": [],
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"code": "#include <string>\n#include <vector>\n\nstd::vector<std::string> split_string(std::string str, std::string delim) {\n std::vector<std::string> splits;\n int i = 0, j;\n int inc = delim.length();\n while (j != std::string::npos) {\n j = str.find(delim, i);\n splits.push_back(str.substr(i, j - i));\n i = j + inc;\n }\n return splits;\n}\n\n// Usage:\nsplit_string(\"quick_-snip\", \"_-\"); // Returns: std::vector<std::string> { \"quick\", \"snip\" }\n"
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},
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{
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"title": "Transform",
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"description": "Transform a string with a function",
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"author": "majvax",
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"tags": [
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"string",
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"transform",
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"c++23"
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],
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"contributors": [],
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"code": "#include <ranges>\n#include <string>\n\ntemplate <typename F>\nstd::string transform(const std::string& str, F&& transformer) {\n return str\n | std::ranges::views::transform(std::forward<F>(transformer))\n | std::ranges::to<std::string>();\n}\n\n\n\n// Usage:\nstd::string str = \"Hello, World!\";\nstd::string transformed = transform(str, [](char c){ return std::toupper(c); });\nstd::cout << transformed << std::endl; // HELLO, WORLD!\n"
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}
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]
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}

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