$$concat

Concatenates primary value array with elements or other arrays of elements.

note

Elements which are null on the primary value will be ignored.

Usage

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

"$$concat:{input}"

Returns

array

Arguments

Argument	Type	Values	Required / Default Value	Description
Primary	array		Yes	Array of arrays / elements (null elements are ignored)

Examples

Input

Definition

Output

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

{ "$$concat": "$" }

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

["a","b"]

{ "$$concat": ["$", ["c", "d"]] }

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

["a","b"]

{ "$$concat": ["$", "c", "d"] }

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

["a","b"]

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

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