expression.IExpressionFunction

Allows you to define your own custom functions for use in expressions.

Methods

`global Object execute(List<Object> args)`

Implement this method to execute your custom function.

Parameters

Param	Description
`args`	The arguments passed to the function, if any.

Returns

Type	Description
`Object`	The result of the function.

Example

// This example shows how to implement a function that returns the sum of its arguments.
global class SumFunction implements IExpressionFunction {
    global Object execute(List<Object> args) {
        Decimal result = 0;
        for (Object arg : args) {
            result += (Decimal)arg;
        }
        return result;
    }
 }