"Iverson bracket" meaning in English

{
  "etymology_text": "Named after Kenneth E. Iverson, who introduced this notation in his programming language APL.",
  "forms": [
    {
      "form": "Iverson brackets",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Iverson bracket (plural Iverson brackets)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Mathematics",
          "orig": "en:Mathematics",
          "parents": [
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "[P]=1ifPistrue;\\0otherwise."
        }
      ],
      "glosses": [
        "A notation that denotes a number that is 1 if the condition in square brackets is satisfied, and 0 otherwise, i.e. (where P is a true or false statement)"
      ],
      "id": "en-Iverson_bracket-en-noun-Cr2bX2gy",
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "notation",
          "notation"
        ],
        [
          "number",
          "number"
        ],
        [
          "condition",
          "condition"
        ],
        [
          "square bracket",
          "square bracket"
        ],
        [
          "true",
          "true"
        ],
        [
          "false",
          "false"
        ],
        [
          "statement",
          "statement"
        ]
      ],
      "raw_glosses": [
        "(mathematics) A notation that denotes a number that is 1 if the condition in square brackets is satisfied, and 0 otherwise, i.e. (where P is a true or false statement)"
      ],
      "topics": [
        "mathematics",
        "sciences"
      ],
      "wikipedia": [
        "Kenneth E. Iverson"
      ]
    }
  ],
  "word": "Iverson bracket"
}

{
  "etymology_text": "Named after Kenneth E. Iverson, who introduced this notation in his programming language APL.",
  "forms": [
    {
      "form": "Iverson brackets",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Iverson bracket (plural Iverson brackets)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English eponyms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with non-redundant non-automated sortkeys",
        "en:Mathematics"
      ],
      "examples": [
        {
          "text": "[P]=1ifPistrue;\\0otherwise."
        }
      ],
      "glosses": [
        "A notation that denotes a number that is 1 if the condition in square brackets is satisfied, and 0 otherwise, i.e. (where P is a true or false statement)"
      ],
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "notation",
          "notation"
        ],
        [
          "number",
          "number"
        ],
        [
          "condition",
          "condition"
        ],
        [
          "square bracket",
          "square bracket"
        ],
        [
          "true",
          "true"
        ],
        [
          "false",
          "false"
        ],
        [
          "statement",
          "statement"
        ]
      ],
      "raw_glosses": [
        "(mathematics) A notation that denotes a number that is 1 if the condition in square brackets is satisfied, and 0 otherwise, i.e. (where P is a true or false statement)"
      ],
      "topics": [
        "mathematics",
        "sciences"
      ],
      "wikipedia": [
        "Kenneth E. Iverson"
      ]
    }
  ],
  "word": "Iverson bracket"
}