"duck typing" meaning in English

{
  "etymology_text": "From the so-called duck test: “if it looks like a duck, swims like a duck, and quacks like a duck, then it probably is a duck.”",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "duck typing (uncountable)",
      "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": "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"
        }
      ],
      "examples": [
        {
          "ref": "2006, Neal Ford, Scott Davis, No Fluff, Just Stuff Anthology: The 2006 Edition, page 16",
          "text": "Ruby proponents call this duck typing:: if the variable responds to a message that asks it to quack like a duck and it quacks, it must be a duck. This is clearly different from the way that Java (and other strongly typed languages) work, […]",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A style of dynamic typing in which an object's current set of methods and properties determines the valid semantics, rather than its inheritance from a particular class or implementation of a specific interface."
      ],
      "hypernyms": [
        {
          "word": "dynamic typing"
        },
        {
          "word": "typing"
        }
      ],
      "id": "en-duck_typing-en-noun-j0MAOTfS",
      "links": [
        [
          "programming",
          "programming#Noun"
        ],
        [
          "dynamic typing",
          "dynamic typing"
        ],
        [
          "method",
          "method"
        ],
        [
          "properties",
          "property"
        ],
        [
          "semantics",
          "semantics"
        ],
        [
          "inheritance",
          "inheritance"
        ],
        [
          "class",
          "class"
        ],
        [
          "implementation",
          "implementation"
        ],
        [
          "interface",
          "interface"
        ]
      ],
      "raw_glosses": [
        "(programming) A style of dynamic typing in which an object's current set of methods and properties determines the valid semantics, rather than its inheritance from a particular class or implementation of a specific interface."
      ],
      "related": [
        {
          "word": "typology"
        }
      ],
      "tags": [
        "uncountable"
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "programming",
        "sciences"
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "Translations",
          "word": "ankkatyypitys"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "Translations",
          "tags": [
            "masculine"
          ],
          "word": "duck typing"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "Translations",
          "tags": [
            "neuter"
          ],
          "word": "Duck-Typing"
        }
      ]
    }
  ],
  "word": "duck typing"
}

{
  "etymology_text": "From the so-called duck test: “if it looks like a duck, swims like a duck, and quacks like a duck, then it probably is a duck.”",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "duck typing (uncountable)",
      "name": "en-noun"
    }
  ],
  "hypernyms": [
    {
      "word": "dynamic typing"
    },
    {
      "word": "typing"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "typology"
    }
  ],
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "English uncountable nouns",
        "Quotation templates to be cleaned",
        "Translation table header lacks gloss",
        "en:Programming"
      ],
      "examples": [
        {
          "ref": "2006, Neal Ford, Scott Davis, No Fluff, Just Stuff Anthology: The 2006 Edition, page 16",
          "text": "Ruby proponents call this duck typing:: if the variable responds to a message that asks it to quack like a duck and it quacks, it must be a duck. This is clearly different from the way that Java (and other strongly typed languages) work, […]",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A style of dynamic typing in which an object's current set of methods and properties determines the valid semantics, rather than its inheritance from a particular class or implementation of a specific interface."
      ],
      "links": [
        [
          "programming",
          "programming#Noun"
        ],
        [
          "dynamic typing",
          "dynamic typing"
        ],
        [
          "method",
          "method"
        ],
        [
          "properties",
          "property"
        ],
        [
          "semantics",
          "semantics"
        ],
        [
          "inheritance",
          "inheritance"
        ],
        [
          "class",
          "class"
        ],
        [
          "implementation",
          "implementation"
        ],
        [
          "interface",
          "interface"
        ]
      ],
      "raw_glosses": [
        "(programming) A style of dynamic typing in which an object's current set of methods and properties determines the valid semantics, rather than its inheritance from a particular class or implementation of a specific interface."
      ],
      "tags": [
        "uncountable"
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "programming",
        "sciences"
      ]
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "Translations",
      "word": "ankkatyypitys"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "Translations",
      "tags": [
        "masculine"
      ],
      "word": "duck typing"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "Translations",
      "tags": [
        "neuter"
      ],
      "word": "Duck-Typing"
    }
  ],
  "word": "duck typing"
}