"dammit operator" meaning in English

{
  "forms": [
    {
      "form": "dammit operators",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "dammit operator (plural dammit operators)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
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          "kind": "other",
          "langcode": "en",
          "name": "Programming",
          "orig": "en:Programming",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2019, Ian Griffiths, Programming C# 8.0: Build Cloud, Web, and Desktop Applications (page 119)",
          "text": "If you have a reference that the compiler presumes could be null […] but which you have good reason to believe will never be null, you can tell the compiler this by using the null forgiving operator […] It is sometimes known informally as the dammit operator, because being an exclamation mark makes it look like a slightly exasperated kind of assertion."
        },
        {
          "ref": "2019, Paul Michaels, Dirk Strauss, Jas Rademeyer, C# 8 and .NET Core 3 Projects Using Azure (page 63)",
          "text": "However, C# 8 does have a feature (which I've heard referred to as the dammit operator) that allows you to insist that, despite what the compiler believes, you know the variable will not be null; […]"
        },
        {
          "ref": "2023, Steve Love, The C# Type System (page 66)",
          "text": "When we've filtered out all the null elements from our collection, we apply the dammit operator to the argument for ToTitleCase, as shown in Listing 2-34."
        }
      ],
      "glosses": [
        "The operator ! in the C# programming language, used to indicate to the compiler that a possibly null reference will not be null at that point."
      ],
      "id": "en-dammit_operator-en-noun-txWrAmDu",
      "links": [
        [
          "programming",
          "programming#Noun"
        ],
        [
          "programming language",
          "programming language"
        ],
        [
          "compiler",
          "compiler"
        ],
        [
          "null",
          "null"
        ],
        [
          "reference",
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      ],
      "raw_glosses": [
        "(programming, slang) The operator ! in the C# programming language, used to indicate to the compiler that a possibly null reference will not be null at that point."
      ],
      "tags": [
        "slang"
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "programming",
        "sciences"
      ]
    }
  ],
  "word": "dammit operator"
}

{
  "forms": [
    {
      "form": "dammit operators",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "dammit operator (plural dammit operators)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
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        "Pages with entries",
        "en:Programming"
      ],
      "examples": [
        {
          "ref": "2019, Ian Griffiths, Programming C# 8.0: Build Cloud, Web, and Desktop Applications (page 119)",
          "text": "If you have a reference that the compiler presumes could be null […] but which you have good reason to believe will never be null, you can tell the compiler this by using the null forgiving operator […] It is sometimes known informally as the dammit operator, because being an exclamation mark makes it look like a slightly exasperated kind of assertion."
        },
        {
          "ref": "2019, Paul Michaels, Dirk Strauss, Jas Rademeyer, C# 8 and .NET Core 3 Projects Using Azure (page 63)",
          "text": "However, C# 8 does have a feature (which I've heard referred to as the dammit operator) that allows you to insist that, despite what the compiler believes, you know the variable will not be null; […]"
        },
        {
          "ref": "2023, Steve Love, The C# Type System (page 66)",
          "text": "When we've filtered out all the null elements from our collection, we apply the dammit operator to the argument for ToTitleCase, as shown in Listing 2-34."
        }
      ],
      "glosses": [
        "The operator ! in the C# programming language, used to indicate to the compiler that a possibly null reference will not be null at that point."
      ],
      "links": [
        [
          "programming",
          "programming#Noun"
        ],
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          "programming language",
          "programming language"
        ],
        [
          "compiler",
          "compiler"
        ],
        [
          "null",
          "null"
        ],
        [
          "reference",
          "reference"
        ]
      ],
      "raw_glosses": [
        "(programming, slang) The operator ! in the C# programming language, used to indicate to the compiler that a possibly null reference will not be null at that point."
      ],
      "tags": [
        "slang"
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "programming",
        "sciences"
      ]
    }
  ],
  "word": "dammit operator"
}