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$concat

Combines the elements of the input array into a single array.

Options

  • values (required) Array of values to be joined, the elements can be arrays themselves.

Example

{
    "fish": ["plaice", "haddock", "halibut"],
    "birds": ["duck", "pigeon"],
    "merged": {
        "$concat": [
            "${fish}",
            "${birds}",
            ["badger", "turtle"],
            "$number"
        ]
    }
}
{
    "fish": ["plaice", "haddock", "halibut"],
    "birds": ["duck", "pigeon"],
    "merged": [
        "plaice",
        "haddock",
        "halibut",
        "duck",
        "pigeon",
        "badger",
        "turtle",
        345633
    ]
}