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 var loadedSignal = new WinJS._Signal();
    document.addEventListener("load", function () { loadedSignal.complete(); });
 
    function loadDataAsync() {
        return WinJS.xhr("uri");
    }
 
    //setup code
    loadedSignal.promise
        .then(loadDataAsync)

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// EXAMPLE 1
var promise = new WinJS.Promise(function (completeCallback, errorCallback) {
    // do some async operation
    // if completed properly, call completeCallback()
    // otherwise call errorCallback(error)
});


//EXAMPLE 2
// extenally managed promise

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private static readonly BufferBlock<string> Buffer = new BufferBlock<string>();

static void Main(string[] args)
{
    Enumerable.Range(0, 100).ToList().ForEach(i => Buffer.SendAsync("Mesage #" + i));

    var consumer = new ActionBlock<string>(s => Process(s), new ExecutionDataflowBlockOptions { MaxDegreeOfParallelism = 5 });
    Buffer.LinkTo(consumer);
    Buffer.Completion.ContinueWith(t => consumer.Complete());

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WinJS.Namespace.define("Application", {
    Derived: WinJS.Namespace._lazy(function() {
        return WinJS.Class.derive(Application.Parent, function() {
            
        });
    })
});

WinJS.Namespace.define("Application", {

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msWriteProfilerMark("ScriptLoading,Navigator,StartTM");
(function () {
    "use strict";

    var nav = WinJS.Navigation;

    WinJS.Namespace.define("Application", {
        PageControlNavigator: WinJS.Class.define(
             ......
        )

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msWriteProfilerMark("ScriptLoading,Navigator-NotExecuted,StartTM");
(function() {
    "use strict";

    var nav = WinJS.Navigation;

    WinJS.Namespace.define("Application", {
        PageControlNavigator: WinJS.Class.define(
            .......

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msWriteProfilerMark("ScriptLoading,Navigator-lazy,StartTM");
(function () {
    "use strict";

    var nav = WinJS.Navigation;

    WinJS.Namespace.define("Application", {
        PageControlNavigatorLazy: WinJS.Namespace._lazy(function () {
            return WinJS.Class.define(
                ............

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using System.Runtime.Serialization;

namespace WcfWorkerRole.Contract
{
    [DataContract]
    public class ProductData
    {
        [DataMember]
        public string SKU { get; set; }

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<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <system.diagnostics>
        <trace>
            <listeners>
                <add type="Microsoft.WindowsAzure.Diagnostics.DiagnosticMonitorTraceListener, Microsoft.WindowsAzure.Diagnostics, Version=2.2.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
                    name="AzureDiagnostics">
                    <filter type="" />
                </add>
            </listeners>

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using System;
using System.Collections.Generic;
using System.Configuration;
using System.Diagnostics;
using System.Linq;
using System.Net;
using System.ServiceModel;
using System.ServiceModel.Web;
using System.Threading;
using Microsoft.WindowsAzure;