StringPointer

Function type for accessing and modifying string values by reference.

This type definition enables functional-style string value manipulation, commonly used in the elements UI system for two-way data binding between UI components and text data models. Unlike other pointer types, this includes an additional erase parameter for special text operations.

Usage example:

var myString = "Hello";
var pointer:StringPointer = (val, erase) -> {
    if (val != null) myString = val;
    // Handle erase operation if needed
    if (erase == true) myString = "";
    return myString;
};

// Read current value
var current = pointer();

// Set new value
pointer("World");

// Erase content
pointer(null, true);