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Building Blocks: Initialize() Jump Start
Jeremy Foster Microsoft Technical Evangelist Christopher Harrison Microsoft Certified Trainer/GeekTrainer Inc.
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Meet Jeremy Foster | @codefoster
Microsoft Technical Evangelist As a Developer Evangelist, Jeremy Foster's role is to inform and inspire developers about Microsoft's tools and platforms. Jeremy was educated in computer engineering and mathematics, and he gathered disparate industry experience in education, aerospace manufacturing, and insurance. With just enough and not nearly enough education and experience, he joined Microsoft. Jeremy aims to help and inspire other software developers to write code and to write it right.
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Meet Christopher Harrison | @geektrainer
Microsoft Certified Trainer/GeekTrainer Inc. Christopher Harrison is a Microsoft Certified Trainer, focusing on SharePoint and SQL Server. He's the owner and Head Geek at GeekTrainer, Inc. He's been training for more than 12 years, with a couple of breaks in the middle to take on full-time developer jobs. These days, he focuses on training, presenting at conferences, and consulting.
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Building Blocks Jump Start
Day 1 | Initialize() Day 2 | Construct() Day 3 | Extend()
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Day 1 Initialize() Overview
essentials of C# and JavaScript two great languages side by side not a deep dive or thorough coverage into either platform agnostic
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Setting Expectations Target Audience
Anyone with a building enthusiasm surrounding the inevitable overload of information that comes out of //build next week. Beginner to intermediate developers "Young" developers grasping for a handle on concepts Web developers looking to learn XAML/C# (or vice versa) Suggested Prerequisites/Supporting Material none
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Day 1 Initialize() Target Agenda
Module 1: Basic Syntax Module 2: Lists Module 3: Asynchrony and Concurrency Module 4: Data Storage Module 5: Services and OData Module 6: Libraries
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Building Blocks Initialize()
Module 1: Basic Syntax
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Topics Module 1: Basic Syntax references variables conditionals loops
functions classes and inheritance
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Module 1: Basic Syntax References
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References (JavaScript)
JavaScript engine gets all script by inclusion executed in order included in the HTML (not in the JavaScript) frameworks like require.js for better control
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script1.js script2.js page.html script3.js
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References (JavaScript)
<head> <title>My Page</title> <script src="/js/script1.js" /> <script src="/js/script2.js" /> <script src="/js/script3.js" /> <script src=" /> <script> // script </script> </head> <body> <div/> <script> // script </script> </body>
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Using a script loader such as requirejs
require(["scripts/myscript"], function(myscript) { // myscript.doSomething(); });
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References (C#) Code is compiled into assemblies Options
Executables (exe) Libraries (dll) Options Add references to dlls Add NuGet packages
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Referencing Classes Every class is referenced by its full name
Namespace Logical grouping of classes Class
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Referencing Classes using System.Text; using System.Web; namespace Demos { public class Message { // produces the same compiled code StringBuilder body = new StringBuilder(); System.Text.StringBuilder body = new System.Text.StringBuilder(); } }
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Topics Module 1: Basic Syntax references variables conditionals loops
functions classes and inheritance
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Module 1: Basic Syntax Variables
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Variables (C#) C# is strongly typed Primitives (value types)
Integers, Booleans, Enumerations Objects (reference types) Strings, Arrays, Classes
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Variable Declaration and Scope
public void DisplayBody() { var output = body.ToString(); if (output.Length > 0) { Int32 length = output.Length; Console.WriteLine(output); } // length out of scope } // output out of scope
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Instantiating Objects
StringBuilder body = new StringBuilder(); Int32[] scores = { 42, 206, 100 }; Member member = new Member() { FirstName = "Christopher", LastName = "Harrison" }; var member = new { FirstName = "Christopher", LastName = "Harrison" };
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variables in C#
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Variables (JavaScript)
Primitives: undefined, null, Boolean, number, string Objects Arrays Functions
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Variables (JavaScript)
// declaration and instantiation var a = 1; var b = "lorem ipsum"; var c = { firstName: "Steve", lastName: "Jacobs" }; var d = [0,1,2,3,4,5]; var e = ["apple","orange","banana"]; var f = [ { firstName: "Sally", lastName: "Mae" }, { firstName: "Billy", lastName: "Joe" }, { firstName: "Fred", lastName: "Whaze" } ];
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codepen.io variables in javascript
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Topics Module 1: Basic Syntax references variables conditionals loops
functions classes and inheritance
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Module 1: Basic Syntax Conditionals
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Conditionals (JavaScript)
// if if(a > 5) { // do something } // if-else if(a > 5) { // do something } else { // do something else } // if-else-if(else-if,else-if) if(a > 100) { // do something } else if(a > 50) { // do something else } else if(a > 20) { // do something else } else if(a > 10) { // do something else }
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codepen.io conditionals in javascript
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Conditionals (C#) // single line if(output.Length == 0) Console.WriteLine("No message"); // multiple line if (output.Length > 0) { Console.WriteLine("This string has {0} letters", output.Length); Console.WriteLine(output); } else { Console.WriteLine("No message"); } // else if if (output.Length > 100) { Console.WriteLine("Output is too long to display"); } else if (output.Length > 0) { Console.WriteLine(output); } else { Console.WriteLine("No message"); }
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conditionals in C#
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Topics Module 1: Basic Syntax references variables conditionals loops
functions classes and inheritance
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Module 1: Basic Syntax Loops
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Loops (C#) // while Int32 index = 0;
while (index < scores.Length) { Console.WriteLine(scores[index]); index++; } // do do { } while (index < scores.Length); // for for (Int32 index = 0; index < scores.Length; index++) { Int32 score = scores[index]; Console.WriteLine(score); // foreach foreach (Int32 score in scores) {
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Loops in C#
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Loops (JavaScript) // for loop for (var i = 0; i < 10; i++) { // do something } // do loop do { // do something } while (x < 100) // while loop while (x < 100) { // do something }
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codepen.io Loops in javascript
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Topics Module 1: Basic Syntax references variables conditionals loops
functions classes and inheritance
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Module 1: Basic Syntax Functions
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Functions (JavaScript)
// standard function function sum(a,b) { return a+b; } var s = sum(1,2); var f = sum; // functions are objects! f(1,2) // -> 3 var sum = function(a,b) { return a+b; }; // anonymous fct
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codepen.io Functions in javascript
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Functions (C#) Perform Action Syntax Accessibility Modifiers
Return type Name Parameters public static String GetOutput(String input) { return input.Length.ToString(); }
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Properties Access values like fields Syntax Accessibility Modifiers
Data type Name
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Properties Customer customer = new Customer();
// property public class Customer { private String ; public String get { return ; } set { = value; // automatic property public class Customer { public String { get; set; } } Customer customer = new Customer(); customer. =
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Functions in C#
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Topics Module 1: Basic Syntax references variables conditionals loops
functions classes and inheritance
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Classes and Inheritance
Module 1: Basic Syntax Classes and Inheritance
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Classes and Inheritance (C#)
Classes model data Think blueprints Inheritance allows for specialization Creates an “Is A” relationship
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Syntax (C#) Access modifier Options Class name Colon for inheritance
public class Customer { public String { get; set; } public Decimal Balance { get; set; } } public class CorporateCustomer : Customer public String Contact { get; set; }
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Interfaces Creates a contract
Must implement all methods and properties public interface IWorker { void DoWork(); } public class Worker : IWorker
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Classes and Inheritance in C#
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Classes and inheritance (JavaScript)
First of all, there aren't any and there isn't any! WinJS helps us out TypeScript offers them too ECMAScript 6 will bring them
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Objects and prototyping (JavaScript)
// create a new Widget 'class' var Widget = function() { // here's the constructor }; var w = new Widget(); w.someProperty = "value"; w.prototype.someProperty = "value";
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WinJS Classes and Inheritance (WinJS)
// create a new Widget 'class' var Robot = WinJS.Class.define( function(name) { this.name = name; }, { modelName: "", on: function() { /* turn robot on */ }, off: function() { /* turn robot off */ } }, { harmsHumans: false } ); var r = new Robot(); r.modelName = "Johnny 5"; r.on(); // var Johnny5 = WinJS.Class.derive(Robot,{},{},{});
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codepen.io Classes and Inheritance in javascript
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Topics Module 1: Basic Syntax references variables conditionals loops
functions classes and inheritance
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Day 1 Initialize() Target Agenda
Module 1: Basic Syntax Module 2: Lists Module 3: Asynchrony and Concurrency Module 4: Data Storage Module 5: Services and OData Module 6: Libraries
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