Using Closures to create an "object-like" struct

trycf-gist.cfm

<p>Using closures, it is possible to create an "object-like" struct with cfml and not using any components.  It allows you to do encapsulation, have methods, do chaining, etc.  It's api is pretty much identical to an object, except that you use a function to create it (instead of new). ACF10+ and Lucee 4.5+</p>

<cfscript>
function make (required numeric input) {

	var value = input;
	var o = {
		add: function (required numeric input) {
			value += input;
			return o;
		},
		subtract: function (required numeric input) {
			value -= input;
			return o;
		},
		multiply: function (required numeric input) {
			value *= input;
			return o;
		},
		divide: function (required numeric input) {
			value /= input;
			return o;
		},
		get: function () {
			return value;
		}
	};
	return o;
}

function print (value, label) {
	writeoutput("<pre>" & label & ": " & value & "<br /></pre>");
}

print(make(1).get(), "make(1).get()");
print(make(1).add(1).get(), "make(1).add(1).get()");
print(make(2).add(3).subtract(1).multiply(5).divide(6).get(), "make(2).add(3).subtract(1).multiply(5).divide(6).get()");


writedump(make(1));
</cfscript>