{ "_id": "6ab40da43d719c1f840940b2", "Package": "cpp4r", "Type": "Package", "Title": "Header-Only 'C++' and 'R' Interface", "Description": "Provides a header only, 'C++' interface to 'R' with\nenhancements over 'cpp11'. Enforces copy-on-write semantics\nconsistent with 'R' behavior. Offers native support for ALTREP\nobjects, 'UTF-8' string handling, modern 'C++' features and\nidioms, and reduced memory requirements. Allows for vendoring,\nmaking it useful for restricted environments. Compared to\n'cpp11', it adds support for converting 'C++' maps to 'R'\nlists, 'Roxygen' documentation directly in 'C++' code, proper\nhandling of matrix attributes, support for nullable external\npointers, bidirectional copy of complex number types,\nflexibility in type conversions, use of nullable pointers, and\nvarious performance optimizations.", "Version": "1.3.0", "Authors@R": "c(person(\"Mauricio\", \"Vargas Sepulveda\", ,\n\"m.vargas.sepulveda@gmail.com\", role = c(\"aut\", \"cre\"), comment = c(ORCID =\n\"0000-0003-1017-7574\")), person(, \"Posit Software, PBC\", role = \"aut\",\ncomment = \"Original cpp11 package\"))", "License": "Apache License (>= 2)", "URL": "https://cpp4r.org, https://github.com/pachadotdev/cpp4r", "BugReports": "https://github.com/pachadotdev/cpp4r/issues", "Encoding": "UTF-8", "VignetteBuilder": "litedown", "Repository": "https://pachadotdev.r-universe.dev", "Date/Publication": "2026-09-23 14:30:49 UTC", "RemoteUrl": "https://github.com/pachadotdev/cpp4r", "RemoteRef": "HEAD", "RemoteSha": "7a375e1d8474cd059df228a2d9e1b66a88c054c5", "NeedsCompilation": "no", "Packaged": { "Date": "2026-09-23 17:25:28 UTC", "User": "root" }, "Author": "Mauricio Vargas Sepulveda [aut, cre] (ORCID:\n),\nPosit Software, PBC [aut] (Original cpp11 package)", "Maintainer": "Mauricio Vargas Sepulveda ", "_user": "pachadotdev", "_type": "src", "_file": "cpp4r_1.3.0.tar.gz", "_fileid": "https://r2.ropensci.org/4e5a13c8cb64874b7292e1353f7c68007fb18c8465226f5f457311d8d8fd6745", "_filesize": 271467, "_sha256": "4e5a13c8cb64874b7292e1353f7c68007fb18c8465226f5f457311d8d8fd6745", "_expires": "2027-01-01T17:34:25.000Z", "_created": "2026-09-23T17:25:28.000Z", "_published": "2026-09-23T17:34:28.015Z", "_jobs": [ { "job": 107298412378, "time": 115, "config": "linux-devel-x86_64", "r": "4.7.0", "check": "OK", "artifact": "10766782295" }, { "job": 107298412758, "time": 112, "config": "linux-release-x86_64", "r": "4.6.1", "check": "OK", "artifact": "10766362925" }, { "job": 107298412307, "time": 94, "config": "macos-oldrel-arm64", "r": "4.5.3", "check": "OK", "artifact": "10766314490" }, { "job": 107298412380, "time": 94, "config": "macos-release-arm64", "r": "4.6.1", "check": "OK", "artifact": "10766564100" }, { "job": 107297355425, "time": 162, "config": "source", "r": "4.6.1", "check": "OK", "artifact": "10766731827" }, { "job": 107298412166, "time": 94, "config": "wasm-release", "r": "4.6.0", "check": "OK", "artifact": "10766837143" }, { "job": 107298412608, "time": 71, "config": "windows-devel-x86_64", "r": "4.7.0", "check": "OK", "artifact": "10766737282" }, { "job": 107298412579, "time": 93, "config": "windows-oldrel-x86_64", "r": "4.5.3", "check": "OK", "artifact": "10766263451" }, { "job": 107298412452, "time": 87, "config": "windows-release-x86_64", "r": "4.6.1", "check": "OK", "artifact": "10766243461" } ], "_host": "GitHub-Actions", "_buildurl": "https://github.com/r-universe/pachadotdev/actions/runs/35895179149", "_status": "success", "_upstream": "https://github.com/pachadotdev/cpp4r", "_commit": { "id": "7a375e1d8474cd059df228a2d9e1b66a88c054c5", "author": "Pacha ", "committer": "Pacha ", "message": "new cran version\n", "time": 1790173849 }, "_maintainer": { "name": "Mauricio Vargas Sepulveda", "email": "m.vargas.sepulveda@gmail.com", "login": "pachadotdev", "orcid": "0000-0003-1017-7574", "description": "Statistician interested in applying statistical methods to address specific policy-relevant questions, particularly in international trade.", "uuid": 10091065 }, "_distro": "resolute", "_registered": true, "_dependencies": [ { "package": "R", "version": ">= 4.0.0", "role": "Depends" }, { "package": "tinytest", "role": "Suggests" }, { "package": "rbibutils", "role": "Suggests" }, { "package": "litedown", "role": "Suggests" } ], "_owner": "pachadotdev", "_selfowned": true, "_usedby": 25, "_updates": [ { "week": "2026-24", "n": 2 }, { "week": "2026-29", "n": 2 }, { "week": "2026-30", "n": 20 }, { "week": "2026-31", "n": 5 }, { "week": "2026-33", "n": 1 }, { "week": "2026-39", "n": 2 } ], "_tags": [], "_topics": [ "cpp" ], "_stars": 8, "_contributors": [ { "user": "pachadotdev", "count": 46, "uuid": 10091065 } ], "_userbio": { "uuid": 10091065, "type": "user", "name": "Mauricio \"Pachá\" Vargas Sepúlveda", "followers": 602, "description": "Statistician interested in applying statistical methods to address specific policy-relevant questions, particularly in international trade." }, "_downloads": { "count": 2241, "source": "https://cranlogs.r-pkg.org/downloads/total/last-month/cpp4r" }, "_devurl": "https://github.com/pachadotdev/cpp4r", "_searchresults": 3, "_rbuild": "4.6.1", "_assets": [ "extra/citation.cff", "extra/citation.html", "extra/citation.json", "extra/citation.txt", "extra/contents.json", "extra/cpp4r.html", "extra/manual.pdf", "extra/NEWS.html", "extra/NEWS.txt", "extra/readme.html", "extra/readme.md" ], "_homeurl": "https://github.com/pachadotdev/cpp4r", "_realowner": "pachadotdev", "_cranurl": true, "_releases": [ { "version": "0.3.0", "date": "2025-10-16" }, { "version": "0.4.0", "date": "2025-12-11" }, { "version": "0.5.0", "date": "2026-04-13" }, { "version": "0.5.1", "date": "2026-04-15" }, { "version": "0.6.0", "date": "2026-05-17" }, { "version": "1.0.0", "date": "2026-06-12" }, { "version": "1.1.0", "date": "2026-07-21" } ], "_exports": [ "pkg_template", "register", "unvendor", "vendor" ], "_help": [ { "page": "cpp4r-package", "title": "Title: Header-Only 'C++' and 'R' Interface", "topics": [ "cpp4r-package" ] }, { "page": "pkg_template", "title": "Start a new project with the cpp4r package template", "topics": [ "pkg_template" ] }, { "page": "register", "title": "Generates wrappers for registered C++ functions", "topics": [ "register" ] }, { "page": "unvendor", "title": "Unvendor the cpp4r headers", "topics": [ "unvendor" ] }, { "page": "vendor", "title": "Vendor the cpp4r headers", "topics": [ "vendor" ] } ], "_pkglogo": "https://github.com/pachadotdev/cpp4r/raw/HEAD/man/figures/logo.svg", "_readme": "https://github.com/pachadotdev/cpp4r/raw/HEAD/README.md", "_rundeps": [], "_vignettes": [ { "source": "v01-intro.Rmd", "filename": "v01-intro.html", "title": "01 - Introduction", "engine": "litedown::vignette", "headings": [ "Motivation", "Differences between R's C API and cpp4r", "Memory protection", "Creating vectors", "Type checking and coercion", "Strings", "Missing values (NA)", "Error handling", "Lists", "Calling R functions from C++", "Environments", "External pointers", "Matrices", "Summary", "References" ], "created": "2026-07-27 12:24:25", "modified": "2026-07-27 12:24:25", "commits": 1 }, { "source": "v02-setup.Rmd", "filename": "v02-setup.html", "title": "02 - Setup", "engine": "litedown::vignette", "headings": [ "C++ Setup", "For Ubuntu Users", "R Setup" ], "created": "2026-07-27 12:24:25", "modified": "2026-07-27 12:24:25", "commits": 1 }, { "source": "v03-package-skeleton.Rmd", "filename": "v03-package-skeleton.html", "title": "03 - Package Skeleton", "engine": "litedown::vignette", "headings": [ "Loading the Required R Packages", "Creating a Dummy Package", "Print a Number", "Exporting a Registered Function", "Number's Sign", "Installing the Package", "Good Practice", "References" ], "created": "2026-07-27 12:24:25", "modified": "2026-07-27 12:24:25", "commits": 1 }, { "source": "v04-read-only.Rmd", "filename": "v04-read-only.html", "title": "04 - Read-only versus Writable R Objects", "engine": "litedown::vignette", "headings": [ "Read and write", "References" ], "created": "2026-07-27 12:24:25", "modified": "2026-07-27 12:24:25", "commits": 1 }, { "source": "v05-logical-functions.Rmd", "filename": "v05-logical-functions.html", "title": "05 - Logical Functions", "engine": "litedown::vignette", "headings": [ "Notes", "Is any value in a vector 'true'?", "Which elements in a vector are 'true'?", "Are all values in a vector 'true'?", "References" ], "created": "2026-07-27 12:24:25", "modified": "2026-07-27 12:24:25", "commits": 1 }, { "source": "v06-rolling-functions.Rmd", "filename": "v06-rolling-functions.html", "title": "06 - Rolling Functions", "engine": "litedown::vignette", "headings": [ "Notes", "Cumulative sum", "Cumulative product", "Range of values", "References" ], "created": "2026-07-27 12:24:25", "modified": "2026-07-27 12:24:25", "commits": 1 }, { "source": "v07-statistical-functions.Rmd", "filename": "v07-statistical-functions.html", "title": "07 - Statistical Functions", "engine": "litedown::vignette", "headings": [ "Notes", "Sum", "Arithmetic mean", "Variance", "Root Mean Square Error (RMSE)", "References" ], "created": "2026-07-27 12:24:25", "modified": "2026-07-27 12:24:25", "commits": 1 }, { "source": "v08-logical-functions-2.Rmd", "filename": "v08-logical-functions-2.html", "title": "08 - Logical Functions with Missing Values", "engine": "litedown::vignette", "headings": [ "Notes", "Is any value in a vector 'true'?", "Which elements in a vector are 'true'?", "Are all values in a vector 'true'?" ], "created": "2026-07-27 12:24:25", "modified": "2026-07-27 12:24:25", "commits": 1 }, { "source": "v09-rolling-functions-2.Rmd", "filename": "v09-rolling-functions-2.html", "title": "09 - Rolling Functions with Missing Values", "engine": "litedown::vignette", "headings": [ "Notes", "Cumulative sum", "Cumulative product", "Cumulative minimum", "Cumulative maximum" ], "created": "2026-07-27 12:24:25", "modified": "2026-07-27 12:24:25", "commits": 1 }, { "source": "v10-statistical-functions-2.Rmd", "filename": "v10-statistical-functions-2.html", "title": "10 - Statistical Functions with Missing Values", "engine": "litedown::vignette", "headings": [ "Notes", "Sum", "Arithmetic mean", "Variance", "Root Mean Square Error (RMSE)" ], "created": "2026-07-27 12:24:25", "modified": "2026-07-27 12:24:25", "commits": 1 }, { "source": "v11-debugging.Rmd", "filename": "v11-debugging.html", "title": "11 - Debugging R Packages", "engine": "litedown::vignette", "headings": [ "Motivation", "Compiler Setup", "Testing for Memory Leaks", "Adding a configure script", "Testing with Docker", "References" ], "created": "2026-07-27 12:24:25", "modified": "2026-07-27 12:24:25", "commits": 1 }, { "source": "v12-external-pointers.Rmd", "filename": "v12-external-pointers.html", "title": "12 - External Pointers", "engine": "litedown::vignette", "headings": [], "created": "2026-07-27 12:24:25", "modified": "2026-07-27 12:24:25", "commits": 1 }, { "source": "v13-compiler-optimization.Rmd", "filename": "v13-compiler-optimization.html", "title": "13 - Compiler Optimizations", "engine": "litedown::vignette", "headings": [ "Motivation", "User-wide Makevars", "Anticonf scripts" ], "created": "2026-07-27 12:24:25", "modified": "2026-07-27 12:24:25", "commits": 1 }, { "source": "v14-linear-algebra.Rmd", "filename": "v14-linear-algebra.html", "title": "14 - Linear Algebra", "engine": "litedown::vignette", "headings": [ "Motivation", "Using Armadillo", "References" ], "created": "2026-07-27 12:24:25", "modified": "2026-07-27 12:24:25", "commits": 1 }, { "source": "v15-internals.Rmd", "filename": "v15-internals.html", "title": "15 - Internals", "engine": "litedown::vignette", "headings": [ "Initial setup and dev workflow", "Code formatting", "Code organization", "Naming conventions", "Vector classes", "Coercion functions", "Protection", "Protect list", "Unwind Protect" ], "created": "2026-07-27 12:24:25", "modified": "2026-07-27 12:24:25", "commits": 1 }, { "source": "v16-worked-examples.Rmd", "filename": "v16-worked-examples.html", "title": "16 - Worked Examples", "engine": "litedown::vignette", "headings": [ "Motivation", "Instructional examples", "Solving a matrix using the Gauss-Jordan method", "Details", "Vendoring", "Building and testing", "Ordinary Least Squares (OLS) estimator", "Linear programming (Simplex phase 2)", "Algorithm", "Numerical example", "Using OMP (parallelization)", "Enabling OpenMP", "Unnamed list", "Named list", "Implementing a rejection and bootstrap sampler", "Extensive R/C++ tests", "Useful R/C++ Integration Examples", "References" ], "created": "2026-07-27 12:24:25", "modified": "2026-07-27 12:24:25", "commits": 1 }, { "source": "v17-FAQ.Rmd", "filename": "v17-FAQ.html", "title": "17 - FAQs", "engine": "litedown::vignette", "headings": [ "Is this only compatible with C++11?", "Can I specify which C++ standard to use?", "My laptop uses C++NN but my cluster uses C++MM, how can I make sure my code works on both?", "What are the underlying types of cpp4r objects?", "How do I add elements to a list?", "Does cpp4r support default arguments?", "How do I create a new empty list?", "How do I retrieve (named) elements from a named vector/list?", "How can I tell whether a vector is named?", "How do I return a \"cpp4r::writable::logicals\" object with only a \"FALSE\" value?", "How do I create a new empty environment?", "How do I assign and retrieve values in an environment? What happens if I try to get a value that does not exist?", "How can I create a \"cpp4r:raws\" from a \"std::string\"?", "How can I create a \"std::string\" from a \"cpp4r::writable::string\"?", "What are the types for C++ iterators?", "What's wrong with \"using namespace std\"?", "How do I modify a vector in place?", "Should I call \"unwind_protect\" manually?", "Destructors", "Nested unwind_protect()", "How do I modify a matrix rownames/colnames on C++ side?", "How do I use the same seed defined in R for random number generation in C++?", "How different is cpp11::function compared to cpp4r::function?" ], "created": "2026-07-27 12:24:25", "modified": "2026-07-27 12:24:25", "commits": 1 } ], "_score": 8.836163283016642, "_indexed": true, "_nocasepkg": "cpp4r", "_universes": [ "pachadotdev" ], "_binaries": [ { "r": "4.7.0", "os": "linux", "version": "1.3.0", "date": "2026-09-23T17:28:28.000Z", "distro": "resolute", "commit": "7a375e1d8474cd059df228a2d9e1b66a88c054c5", "fileid": "https://r2.ropensci.org/a2e768c32cc1aff3e6b756dc36a8c9cbefbe5fba61ebb72b62eae8fa046096a2", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/pachadotdev/actions/runs/35895179149" }, { "r": "4.6.1", "os": "linux", "version": "1.3.0", "date": "2026-09-23T17:28:39.000Z", "distro": "resolute", "commit": "7a375e1d8474cd059df228a2d9e1b66a88c054c5", "fileid": "https://r2.ropensci.org/bb40695c97c5c6ef658651cbbcb7935cb300c6d3cf897de879eb1991d4d63e8a", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/pachadotdev/actions/runs/35895179149" }, { "r": "4.5.3", "os": "mac", "version": "1.3.0", "date": "2026-09-23T17:33:48.000Z", "commit": "7a375e1d8474cd059df228a2d9e1b66a88c054c5", "fileid": "https://r2.ropensci.org/28e637db8081aa33b84dec448195903aad473468d1377d2b5c27cf96320730cd", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/pachadotdev/actions/runs/35895179149" }, { "r": "4.6.1", "os": "mac", "version": "1.3.0", "date": "2026-09-23T17:33:48.000Z", "commit": "7a375e1d8474cd059df228a2d9e1b66a88c054c5", "fileid": "https://r2.ropensci.org/2a992969d37aaaa83b0860904becc6be3f617b45df2c689308209d0d7647bd46", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/pachadotdev/actions/runs/35895179149" }, { "r": "4.6.0", "os": "wasm", "version": "1.3.0", "date": "2026-09-23T17:28:43.000Z", "commit": "7a375e1d8474cd059df228a2d9e1b66a88c054c5", "fileid": "https://r2.ropensci.org/2d320a1b6905f8c56c8aebb1e998a28aa2d9c6821873a7d331303d55702b6d6a", "status": "success", "buildurl": "https://github.com/r-universe/pachadotdev/actions/runs/35895179149" }, { "r": "4.7.0", "os": "win", "version": "1.3.0", "date": "2026-09-23T17:27:51.000Z", "commit": "7a375e1d8474cd059df228a2d9e1b66a88c054c5", "fileid": "https://r2.ropensci.org/5aa9ddaff83b2c884e59083f039e2ce8da8495db48c88769b8e3f13229b53856", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/pachadotdev/actions/runs/35895179149" }, { "r": "4.5.3", "os": "win", "version": "1.3.0", "date": "2026-09-23T17:28:13.000Z", "commit": "7a375e1d8474cd059df228a2d9e1b66a88c054c5", "fileid": "https://r2.ropensci.org/86c5048e823baa041c60fc8af88d7ccc54063620fc0ed8c3222bd38851990d7e", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/pachadotdev/actions/runs/35895179149" }, { "r": "4.6.1", "os": "win", "version": "1.3.0", "date": "2026-09-23T17:27:58.000Z", "commit": "7a375e1d8474cd059df228a2d9e1b66a88c054c5", "fileid": "https://r2.ropensci.org/fbe20246b976059c8d2d936ee883d668300e424ef246e3a3ce96b58b38870eee", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/pachadotdev/actions/runs/35895179149" } ] }