manuel / bucky-rdp

A trivial implementation of Reactive Demand Programming

A trivial implementation of Reactive Demand Programming for Node.js and Browserify.

Supports the following behaviors:

rdp.bConst

rdp.bConst(value)

While its input signal is active, produces an unchanging value as its output signal. Ignores the actual value of the input signal.

rdp.bPipe

rdp.bPipe(b1, ..., bN)

A chain of one or more behaviors.

rdp.bFMap

rdp.bFMap(function)

A behavior that applies a function to the value of its input signal, and uses the result as the value of its output signal.

Example

var rdp = require("bucky-rdp");

// Create some behaviors for transforming numbers.
var bDouble = rdp.bFMap(function(val) { return val * 2; });
var bMinusOne = rdp.bFMap(function(val) { return val - 1; });

// Create a pipeline behavior of the two behaviors
var myBehavior = rdp.bPipe(bDouble, bMinusOne);

// Apply an inactive input signal to the pipeline behavior
var sigIn = rdp.makeSignal();
var sigOut = rdp.apply(myBehavior, sigIn);

// Change the input signal value and watch the output signal change
sigIn.setValue(2);
console.log(sigOut.getValue()); // Prints 3
sigIn.setValue(4);
console.log(sigOut.getValue()); // Prints 7
sigIn.deactivate();

License

MIT