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    behavior.js byte-stream.js clock.js iteration.js observable.js operators.js promise-queue.js promise.js stream.js task.js

  • operators.js

  • ¶

    The operators module provides named function objects corresponding to language operators.

    
"use strict";
  • ¶

    The equals and compare operators provided by the Collections package allow deep comparison of arbitrary values and delegate to the eponymous methods of instances if they are defined.

    require("collections/shim-object");

exports.equals = Object.equals;

exports.compare = Object.compare;

exports.not = function (x) { return !x };

exports.and = function (x, y) { return x && y };

exports.or = function (x, y) { return x || y };

exports.add = function (x, y) {
    return x + y;
};

exports.sub = function (x, y) {
    return x - y;
};

exports.div = function (x, y) {
    return x / y;
};

exports.mul = function (x, y) {
    return x * y;
};

exports.tuple = function () {
    return Array.prototype.slice.call(arguments);
};
  • ¶

    Behaviors and signals will propagate undefined if any operand is not defined.

    exports.defined = function (value) {
  • ¶

    !NaN && !null && !undefined

        return value === value && value != null;
};