$$flat

Flatten an array of arrays (non array elements will remain).

note

All null elements are removed from result

Usage

{
  "$$flat": [ /* arrays / elements */ ]
}

Returns

array

Arguments

Argument	Type	Values	Required / Default Value	Description
Primary	array		Yes	Array of arrays / elements

Examples

Input

Definition

Output

[
  "a",
  "b"
]

{
  "$$flat": [
    "$", 
    null, 
    "c", 
    ["d", null]
  ] 
}

[
  "a",
  "b",
  "c",
  "d"
]