"Barton-Nackman trick" meaning in English

{
  "etymology_text": "The technique was introduced by John Barton and Lee Nackman.",
  "forms": [
    {
      "form": "the Barton-Nackman trick",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "def": "1"
      },
      "expansion": "the Barton-Nackman trick",
      "name": "en-prop"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
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          "kind": "other",
          "name": "English entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
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          "source": "w"
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          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Programming",
          "orig": "en:Programming",
          "parents": [
            "Computing",
            "Software engineering",
            "Technology",
            "Computer science",
            "Engineering",
            "Software",
            "All topics",
            "Sciences",
            "Applied sciences",
            "Media",
            "Fundamental",
            "Communication"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A form of restricted template expansion in C++, characterized by an in-class friend function definition appearing in the base class template component of the curiously recurring template pattern."
      ],
      "id": "en-Barton-Nackman_trick-en-name-b4bl4C3i",
      "links": [
        [
          "programming",
          "programming#Noun"
        ],
        [
          "restricted",
          "restricted"
        ],
        [
          "template",
          "template"
        ],
        [
          "expansion",
          "expansion"
        ],
        [
          "C++",
          "C++"
        ],
        [
          "class",
          "class"
        ],
        [
          "friend",
          "friend"
        ],
        [
          "function",
          "function"
        ],
        [
          "definition",
          "definition"
        ],
        [
          "base class",
          "base class"
        ],
        [
          "curiously recurring template pattern",
          "curiously recurring template pattern"
        ]
      ],
      "raw_glosses": [
        "(programming) A form of restricted template expansion in C++, characterized by an in-class friend function definition appearing in the base class template component of the curiously recurring template pattern."
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "programming",
        "sciences"
      ]
    }
  ],
  "word": "Barton-Nackman trick"
}

{
  "etymology_text": "The technique was introduced by John Barton and Lee Nackman.",
  "forms": [
    {
      "form": "the Barton-Nackman trick",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "def": "1"
      },
      "expansion": "the Barton-Nackman trick",
      "name": "en-prop"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English eponyms",
        "English lemmas",
        "English multiword terms",
        "English proper nouns",
        "English terms with non-redundant non-automated sortkeys",
        "English uncountable nouns",
        "en:Programming"
      ],
      "glosses": [
        "A form of restricted template expansion in C++, characterized by an in-class friend function definition appearing in the base class template component of the curiously recurring template pattern."
      ],
      "links": [
        [
          "programming",
          "programming#Noun"
        ],
        [
          "restricted",
          "restricted"
        ],
        [
          "template",
          "template"
        ],
        [
          "expansion",
          "expansion"
        ],
        [
          "C++",
          "C++"
        ],
        [
          "class",
          "class"
        ],
        [
          "friend",
          "friend"
        ],
        [
          "function",
          "function"
        ],
        [
          "definition",
          "definition"
        ],
        [
          "base class",
          "base class"
        ],
        [
          "curiously recurring template pattern",
          "curiously recurring template pattern"
        ]
      ],
      "raw_glosses": [
        "(programming) A form of restricted template expansion in C++, characterized by an in-class friend function definition appearing in the base class template component of the curiously recurring template pattern."
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "programming",
        "sciences"
      ]
    }
  ],
  "word": "Barton-Nackman trick"
}