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Merge remote-tracking branch 'origin/main' into snippets-c++
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majvax committed Jan 4, 2025
2 parents a959e95 + fce087f commit 4708bd9
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41 changes: 0 additions & 41 deletions public/consolidated/cpp.json
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}
]
},
{
"categoryName": "File Handling",
"snippets": [
{
"title": "Find files recursively",
"description": "Find all the files in a directory and subdirectories using a predicate function.",
"author": "majvax",
"tags": [
"filesystem",
"file_search",
"c++17"
],
"contributors": [],
"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"
},
{
"title": "Find files",
"description": "Find all the files in a directory using a predicate function.",
"author": "majvax",
"tags": [
"filesystem",
"file_search",
"c++17"
],
"contributors": [],
"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"
},
{
"title": "List Directories",
"description": "Lists all the directories in a path.",
"author": "majvax",
"tags": [
"filesystem",
"directories",
"c++17"
],
"contributors": [],
"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"
}
]
},
{
"categoryName": "Math And Numbers",
"snippets": [
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