A function is a block of code designed to perform a specific task or operation. Most functions require input parameter values upon which the operation will be performed. A function will always return an output value.
A function can be invoked, or called using the Datafeed360 portal interface or the Datafeed360 API.
An overload is when a function has the same name but differs in the number of parameters, type of parameters, or order of the parameters. When calling an overloaded function, Datafeed360 chooses the correct function by comparing the order and data type of the input parameters with the appropriate implementation.
The result of a function is called its return value and the data type of the return value is called the return type.