methods.cpp

#include <cppscript>

var growth_rate(var tree) { return tree["height"]/tree["age"]; }

void grow(var tree, var height) { tree["height"] += height; }

var tree(var species, var height, var age)
{
        var tree = object();
        tree["species"] = species;
        tree["height"] = height;
        tree["age"] = age;
        tree["growth_rate"] = growth_rate; // Equivalent to bind(growth_rate, tree);
        tree["grow"] = grow; // Equivalent to bind(grow, tree)
        return tree;
}

var script_main(var args)
{
        var oak = tree("oak", 10, 2);
        writeln( oak["growth_rate"]() ); // 5
        oak["grow"](2);
        writeln( oak["growth_rate"]() ); // 6
        return 0;
}

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