functionParamTypes

functionParamTypes(Type): Array<FunctionParam>

Returns the list of parameters from the given function type. This function fails if the provided type is not a Function type.

Introduced in DataWeave 2.3.0. Supported by Mule 4.3 and later.

Parameters

Name	Description
t	The function type.

Example

This example shows how functionParamTypes behaves with different inputs.

Source

%dw 2.0
output application/json
import * from dw::core::Types
type AFunction = (String, Number) -> Number
type AFunction2 = () -> Number
---
{
    a: functionParamTypes(AFunction),
    b: functionParamTypes(AFunction2)
}DataWeave

Output

 {
    "a": [
      {
        "paramType": "String",
        "optional": false
      },
      {
        "paramType": "Number",
        "optional": false
      }
    ],
    "b": [

    ]
  }Json