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  "Package": "hdd",
  "Type": "Package",
  "Title": "Easy Manipulation of Out of Memory Data Sets",
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  "Authors@R": "person(\"Laurent\", \"Berge\", email = \"laurent.berge@u-bordeaux.fr\", role = c(\"aut\", \"cre\"))",
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  "Description": "Hard drive data: Class of data allowing the easy\nimportation/manipulation of out of memory data sets. The data\nsets are located on disk but look like in-memory, the syntax\nfor manipulation is similar to 'data.table'. Operations are\nperformed \"chunk-wise\" behind the scene. See\n<https://lrberge.github.io/hdd/> for more information.",
  "License": "GPL-3",
  "Encoding": "UTF-8",
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  "Repository": "https://lrberge.r-universe.dev",
  "Date/Publication": "2023-08-24 14:55:09 UTC",
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    "User": "root"
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  "Author": "Laurent Berge [aut, cre]",
  "Maintainer": "Laurent Berge <laurent.berge@u-bordeaux.fr>",
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    "committer": "laurent r berge <laurent.berge@uni.lu>",
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  "_tags": [],
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  "_assets": [
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    "extra/citation.html",
    "extra/citation.json",
    "extra/citation.txt",
    "extra/contents.json",
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    "extra/NEWS.html",
    "extra/NEWS.txt",
    "extra/readme.html",
    "extra/readme.md",
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  "_realowner": "lrberge",
  "_cranurl": true,
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      "date": "2019-11-06"
    },
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    "getHdd_extract.cap",
    "guess_col_types",
    "guess_delim",
    "hdd",
    "hdd_merge",
    "hdd_setkey",
    "hdd_slice",
    "origin",
    "peek",
    "readfst",
    "setHdd_extract.cap",
    "txt2hdd",
    "write_hdd"
  ],
  "_help": [
    {
      "page": "hdd-package",
      "title": "Easy manipulation of out of memory data sets",
      "topics": [
        "hdd-package",
        "_PACKAGE"
      ]
    },
    {
      "page": "sub-.hdd",
      "title": "Extraction of HDD data",
      "topics": [
        "[.hdd"
      ]
    },
    {
      "page": "cash-.hdd",
      "title": "Extracts a single variable from a HDD object",
      "topics": [
        "$.hdd"
      ]
    },
    {
      "page": "dim.hdd",
      "title": "Dimension of a HDD object",
      "topics": [
        "dim.hdd"
      ]
    },
    {
      "page": "guess_col_types",
      "title": "Guesses the columns types of a file",
      "topics": [
        "guess_col_types"
      ]
    },
    {
      "page": "guess_delim",
      "title": "Guesses the delimiter of a text file",
      "topics": [
        "guess_delim"
      ]
    },
    {
      "page": "hdd",
      "title": "Hard drive data set",
      "topics": [
        "hdd"
      ]
    },
    {
      "page": "hdd_merge",
      "title": "Merges data to a HDD file",
      "topics": [
        "hdd_merge"
      ]
    },
    {
      "page": "hdd_setkey",
      "title": "Sorts HDD objects",
      "topics": [
        "hdd_setkey"
      ]
    },
    {
      "page": "hdd_slice",
      "title": "Applies a function to slices of data to create a HDD data set",
      "topics": [
        "hdd_slice"
      ]
    },
    {
      "page": "names.hdd",
      "title": "Variables names of a HDD object",
      "topics": [
        "names.hdd"
      ]
    },
    {
      "page": "origin",
      "title": "Extracts the origin of a HDD object",
      "topics": [
        "origin"
      ]
    },
    {
      "page": "peek",
      "title": "Peek into a text file",
      "topics": [
        "peek"
      ]
    },
    {
      "page": "print.hdd",
      "title": "Print method for HDD objects",
      "topics": [
        "print.hdd"
      ]
    },
    {
      "page": "readfst",
      "title": "Read fst or HDD files as DT",
      "topics": [
        "readfst"
      ]
    },
    {
      "page": "setHdd_extract.cap",
      "title": "Sets/gets the size cap when extracting hdd data",
      "topics": [
        "getHdd_extract.cap",
        "setHdd_extract.cap"
      ]
    },
    {
      "page": "summary.hdd",
      "title": "Summary information for HDD objects",
      "topics": [
        "summary.hdd"
      ]
    },
    {
      "page": "txt2hdd",
      "title": "Transforms text data into a HDD file",
      "topics": [
        "txt2hdd"
      ]
    },
    {
      "page": "write_hdd",
      "title": "Saves or appends a data set into a HDD file",
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        "write_hdd"
      ]
    }
  ],
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      "source": "hdd_walkthrough.Rmd",
      "filename": "hdd_walkthrough.html",
      "title": "hdd walkthrough",
      "author": "Laurent Bergé",
      "engine": "knitr::rmarkdown",
      "headings": [
        "Example with publication data",
        "Importation",
        "Importing with preprocessing",
        "Manipulation",
        "Exploring a hdd data set",
        "Extracting a full variable",
        "Reading full hdd data sets from disk to memory",
        "Slicing",
        "Speed considerations and limitations",
        "In-memory operations will always be faster",
        "On aggregation",
        "References"
      ],
      "created": "2019-10-26 20:28:09",
      "modified": "2023-08-22 13:39:16",
      "commits": 8
    }
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  "_nocasepkg": "hdd",
  "_universes": [
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