ValueRef()

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creates a reference to a UDF that acts like a simple value.

Introduced: 6.1.0.15

ValueRef( ref=function );

Returns: any

Argument Description
ref
function, required 		edit

udf returning the value

Alias: function, udf

Examples

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// First, let's create a simple UDF that returns a value
function getName() {
    return "John Doe";
}
// Create a reference to the getName function using ValueRef()
name = ValueRef(getName);
// Example 1: Basic Usage
writeOutput("Direct function call: " & getName() & "<br>");
writeOutput("Using ValueRef: " & name & "<br>");
// Example 2: Using ValueRef with a more complex UDF
function calculateTotal(price, quantity) {
    return price * quantity;
}
// Create a reference with preset values
fixedCalculation = ValueRef(function() {
    return calculateTotal(10, 5);
});
writeOutput("Fixed calculation result: " & fixedCalculation & "<br>");
// Example 3: Using ValueRef with a closure
counter = 0;
incrementCounter = ValueRef(function() {
    counter++;
    return counter;
});
writeOutput("Counter value: " & incrementCounter & "<br>");
writeOutput("Counter value: " & incrementCounter & "<br>");
// Example 4: Using ValueRef in a struct
person = {
    firstName: ValueRef(function() {
        return "Jane";
    }),
    lastName: ValueRef(function() {
        return "Smith";
    }),
    fullName: ValueRef(function() {
        // Note: This would need to be implemented differently in practice
        // as the ValueRef doesn't have access to the other references directly
        return "Jane Smith";
    })
};
writeOutput("Person's full name: " & person.fullName);

See also