# Type.FunctionRequiredParameters

## Overview of the Type.FunctionRequiredParameters Function

Before we delve into the M code behind the Type.FunctionRequiredParameters function, let’s first understand what this function does. The Type.FunctionRequiredParameters function is used to retrieve a list of required parameters for a given function. This function takes a single argument, which is the function to retrieve the required parameters for. The function returns a list of required parameters for the given function.

## Syntax of the Type.FunctionRequiredParameters Function

The syntax of the Type.FunctionRequiredParameters function is as follows:

``` Type.FunctionRequiredParameters(function as any) as list ```

The function argument is the function for which to retrieve the required parameters. This argument can be a reference to a function, or it can be a function literal. The function returns a list of required parameters for the given function.

## Example Usage of the Type.FunctionRequiredParameters Function

Now that we’ve covered the syntax of the Type.FunctionRequiredParameters function, let’s explore an example usage of this function. Suppose we have a function named “MyFunction” that takes two required parameters:

``` let MyFunction = (param1 as any, param2 as any) => param1 + param2, RequiredParams = Type.FunctionRequiredParameters(MyFunction) in RequiredParams ```

In this example, we define a function named “MyFunction” that takes two required parameters. We then use the Type.FunctionRequiredParameters function to retrieve the required parameters for this function. The result of this function call is a list containing the two required parameters of the “MyFunction” function.

## The M Code Behind the Type.FunctionRequiredParameters Function

Now that we’ve covered the basics of the Type.FunctionRequiredParameters function, let’s take a closer look at the M code behind this function. The M code for the Type.FunctionRequiredParameters function is defined as follows:

``` () as record => [Type = "FunctionRequiredParameters"] ```

As we can see, the M code for the Type.FunctionRequiredParameters function is quite simple. The function takes no arguments and simply returns a record with a single field named “Type” with the value “FunctionRequiredParameters”. The Power Query M engine uses this information to retrieve the required parameters for a given function.

The Type.FunctionRequiredParameters function is a powerful function in the Power Query M language that enables users to retrieve a list of required parameters for a given function. In this article, we’ve explored the M code behind this function and provided an example usage of this function. By leveraging the Type.FunctionRequiredParameters function, you can enhance your Power Query M skills and perform more advanced data transformations and analysis tasks.

Subject