$$if

Conditionally returns a value, if the evaluation of the condition argument is truthy (using the Truthy logic). A fallback value (if condition evaluates to false) is optional.

Usage

{
  "$$if": /* condition */,
  "then": /* then value */,
  "else": /* else value */
}

Returns

Value of then or else

Arguments

Argument	Type	Values	Required / Default Value	Description
Primary	array		Yes	Condition
then			Yes	Value to return if condition is true
else			null	Value to return if condition is false

Alternative form

{
  "$$if": [ /* condition */, /* then */, /* else ? */]
}

Arguments

Argument	Type	Values	Required / Default Value	Description
Primary	array		Yes	Array of size 2 / 3

Examples

Input

Definition

Output

{ "$$if": true, "then": "b", "else": "c" }

"b"

{ "$$if": [true, "b"] }

"b"

{ "$$if": false, "then": "b" }

null

{ "$$if": [null, "b"] }

null

{
  "a": true, 
  "b": true
}

{ 
  "$$if": [
    "$.a", 
    { 
      "$$if": [
        "$.b", 
        "a&b" 
      ] 
    } 
  ]
}

"a&b"

{ 
  "a": false,
  "b": true
}

{ 
  "$$if": [
    "$.a", 
    "a|b", 
    { 
      "$$if": [
        "$.b",
        "a|b" 
      ] 
    }
  ] 
}

"a|b"