{
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  "Package": "hash",
  "Type": "Package",
  "Title": "Full Featured Implementation of Hash Tables/Associative\nArrays/Dictionaries",
  "Version": "2.2.6.4",
  "Date": "2026-01-21",
  "Authors@R": "c(person(\"Christopher\", \"Brown\", email = \"chris.brown@decisionpatterns.com\", role = \"aut\"),\nperson(\"John\", \"Hughes\", email = \"drjphughesjr@gmail.com\", role = c(\"cre\", \"ctb\")))",
  "Description": "Implements a data structure similar to hashes in Perl and\ndictionaries in Python but with a purposefully R flavor. For\nobjects of appreciable size, access using hashes outperforms\nnative named lists and vectors.",
  "License": "GPL (>= 2)",
  "URL": "http://www.johnhughes.org",
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    "Date": "2026-10-18 08:02:17 UTC",
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  "Maintainer": "John Hughes <drjphughesjr@gmail.com>",
  "Repository": "https://drjphughesjr.r-universe.dev",
  "Date/Publication": "2026-01-21 15:00:09 UTC",
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    "source": "https://cranlogs.r-pkg.org/downloads/total/last-month/hash"
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  "_searchresults": 3712,
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  "_assets": [
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    "extra/citation.html",
    "extra/citation.json",
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  "_releases": [
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    },
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      "version": "2.2.3",
      "date": "2012-05-21"
    },
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      "version": "2.2.4",
      "date": "2012-10-29"
    },
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      "version": "2.2.5",
      "date": "2013-01-31"
    },
    {
      "version": "2.2.6",
      "date": "2013-02-21"
    },
    {
      "version": "3.0.1",
      "date": "2014-02-24"
    },
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      "version": "2.2.6.1",
      "date": "2014-03-03"
    },
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      "version": "2.2.6.2",
      "date": "2022-03-22"
    },
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      "version": "2.2.6.3",
      "date": "2023-08-19"
    },
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      "version": "2.2.6.4",
      "date": "2026-01-21"
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  ],
  "_exports": [
    ".set",
    "as.list.hash",
    "clear",
    "copy",
    "del",
    "delete",
    "format",
    "has.key",
    "hash",
    "invert",
    "inverted.hash",
    "is.empty",
    "is.hash",
    "keys",
    "make.keys",
    "names.hash",
    "values",
    "values<-"
  ],
  "_help": [
    {
      "page": "hash-package",
      "title": "Hash/associative array/dictionary data structure for the R language.",
      "topics": [
        "hash-package"
      ]
    },
    {
      "page": "set",
      "title": "assign key-value pair(s) to a hash",
      "topics": [
        ".set"
      ]
    },
    {
      "page": "clear",
      "title": "Removes all key-value pairs from a hash",
      "topics": [
        "clear",
        "clear,hash-method",
        "clear-methods"
      ]
    },
    {
      "page": "copy",
      "title": "Create a seperate copy of a hash object.",
      "topics": [
        "copy",
        "copy,hash-method",
        "copy-methods"
      ]
    },
    {
      "page": "del",
      "title": "Remove key-value pair(s) from a hash",
      "topics": [
        "del",
        "del,ANY,hash-method",
        "del-methods",
        "delete",
        "delete,ANY,hash-method",
        "delete-methods"
      ]
    },
    {
      "page": "format",
      "title": "Methods for Function format in Package 'hash'",
      "topics": [
        "format",
        "format,hash-method"
      ]
    },
    {
      "page": "has-key",
      "title": "Test for existence of key(s) on a hash",
      "topics": [
        "has.key",
        "has.key,ANY,hash-method",
        "has.key-methods"
      ]
    },
    {
      "page": "hash",
      "title": "hash/associative array/dictionary data structure for the R language",
      "topics": [
        "as.list.hash",
        "hash",
        "is.hash"
      ]
    },
    {
      "page": "hash-accessors",
      "title": "Accessor methods for the hash class.",
      "topics": [
        "$,hash-method",
        "$<-,hash,ANY,ANY-method",
        "$<-,hash,ANY,NULL-method",
        "$<-,hash,ANY-method",
        "$<-,hash,missing,NULL-method",
        "$<-,hash,NULL-method",
        "$<-,hash-method",
        "hash-accessors",
        "[,hash,ANY,missing,missing-method",
        "[,hash,missing,missing,missing-method",
        "[<-,hash,ANY,missing,ANY-method",
        "[<-,hash,ANY,missing,NULL-method",
        "[<-,hash,ANY,missing-method",
        "[[,hash,ANY,missing-method",
        "[[<-,hash,ANY,missing,ANY-method",
        "[[<-,hash,ANY,missing,NULL-method",
        "[[<-,hash,ANY,missing-method"
      ]
    },
    {
      "page": "hash-class",
      "title": "Class \"hash\"",
      "topics": [
        "hash-class"
      ]
    },
    {
      "page": "invert",
      "title": "Create an inverted hash.",
      "topics": [
        "invert",
        "invert,hash-method",
        "invert-methods",
        "inverted.hash"
      ]
    },
    {
      "page": "is.empty",
      "title": "Test if a hash has no key-value pairs.",
      "topics": [
        "is.empty"
      ]
    },
    {
      "page": "keys",
      "title": "Returns key(s) from a hash",
      "topics": [
        "keys",
        "keys,hash-method",
        "keys-methods",
        "names",
        "names.hash"
      ]
    },
    {
      "page": "length",
      "title": "Returns the number of items in a hash",
      "topics": [
        "length",
        "length,hash-method",
        "length-methods"
      ]
    },
    {
      "page": "make.keys",
      "title": "creates/coerces objects to proper hash keys",
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        "make.keys"
      ]
    },
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      "page": "values",
      "title": "Extract values of a hash object.",
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        "values",
        "values,hash-method",
        "values-methods",
        "values<-",
        "values<-,hash,ANY-method",
        "values<-,hash-method",
        "values<--methods"
      ]
    }
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