Schedule

Schedule

Tuesday, March 3

1425405600 Tech News Today
1425409200 MacBreak Weekly
1425418200 Security Now
1425427200 Tech News 2Night
1425430800 All About Android

Wednesday, March 4

1425486600 FLOSS Weekly
1425492000 Tech News Today
1425495600 Windows Weekly
1425502800 This Week in Google
1425513600 Tech News 2Night
1425515400 Android App Arena
1425520800 Ham Nation

Thursday, March 5

1425578400 Tech News Today
1425582000 Know How...
1425587400 Marketing Mavericks
1425592800 Home Theater Geeks
1425600000 Tech News 2Night
1425601800 The Giz Wiz

Friday, March 6

1425664800 Tech News Today
1425668400 This Week in Law
1425679200 Before You Buy
1425686400 Tech News 2Night
1425690000 Padre's Corner

Saturday, March 7

1425754800 The Tech Guy

Sunday, March 8

1425837600 The Tech Guy
1425852000 This Week in Tech

Monday, March 9

1425920400 Tech News Today
1425924000 Triangulation
1425929400 iPad Today
1425936600 Coding 101
1425942000 Tech News 2Night

Tuesday, March 10

1426006800 Tech News Today
1426010400 MacBreak Weekly
1426019400 Security Now
1426028400 Tech News 2Night
1426032000 All About Android

Wednesday, March 11

1426087800 FLOSS Weekly
1426093200 Tech News Today
1426096800 Windows Weekly
1426104000 This Week in Google
1426114800 Tech News 2Night
1426116600 Android App Arena
1426122000 Ham Nation

Thursday, March 12

1426179600 Tech News Today
1426183200 Know How...
1426188600 Marketing Mavericks
1426194000 Home Theater Geeks
1426201200 Tech News 2Night
1426203000 The Giz Wiz

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TWiT Live Specials

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Tech News Today

Mobile World Congress coverage.

iPad Today

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This Week in Tech

Mobile World Congress preview, Apple Watch speculation, Title II, and more.

The Tech Guy
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TWiT Live Specials

The Samsung Galaxy S6, S6 Edge, and Samsung Pay launch.

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Coding 101 8

Farewell to C#

March 13 2014

Hosts: Fr. Robert Ballecer, SJ and Shannon Morse

Guest: Lou Maresca

Welcome to Coding 101 - It's the TWiT show that gives YOU the knowledge to live in the wonderful world of the programmer. This week we are reviewing objects, checking out your viewer submissions, and getting into classes and methods!

Reviewing Objects and Viewer Submissions

Viewer Submissions!
Dean created this Bank ATM Emulator.
Code is available here.

Joe created this background color changer using the WPF.
Code is available here.

Dean created this RSS Handler for Coding 101.
Code is available here.

Find the Code for ALL of our episodes HERE!

Ivory Tower

Classes/Methods
* In the last episode we started talking about Object Oriented programing. I didn't want to overload us as we were just starting to talk about XAML, but now we're going to go back and show you how ALL of your code fits into the C# universe of Objects, Classes and Methods.

A Class is a group of related Variables, Methods (Functions), and pretty much everything that we HAVEN'T talked about that are placed together to create the BLUEPRINT for an OBJECT.

That class become a new type which you can create several instances of when needed.

My Sample Class

class PadreSaysHello

{

}

Now we need to populate that class "template" with members.

class PadreSaysHello

{

public void PrintHello ()

{

Console.WriteLine (""Hello TWiT Army"");

}

}

As we mentioned... this is only the TEMPLATE for an object. It will come into existence when we create it by using a keyword

PadreSaysHello TWiT = new PadreSaysHello ();

TWiT.PrintHello();"

The first line CREATED a new object called ""TWiT"" based on the ""PadreSaysHello"" class.

The second line referenced the ""PrintHello"" function within the ""TWiT"" object and resulted in ""Hello TWiT Army"" being outputed to the console

Defining a Class
[attributes] [modifiers] class identifier [:base-type]

{

body[;]

}

- Attributes hold declarative data. It is optional.

- Modifiers are listed below. It is optional, but will defalt to internal.

- ""Class Identifier"" is the name of the ""blueprint""

- base-type may define any class other than System.Array, System.Delegate, System.MulticastDelegate, System.Enum or System.ValueType as the base class for this class. If a base class is not supplied, then the class will inherit from System.Object.

- base-type may also specify the interfaces implemented by this class. The interfaces must be listed after the base class name (if specified) and must be separated by commas.

- The body contains the member declarations."

Modifiers
* abstract - the class is ONLY for inheritance - This cannot be turned into an instance

* sealed - Nothing in this class can be inherited

* static – verthing in this class is static

* unsafe - Lets programers create UNSAFE constructes (pointers)

* public - Everything in this class can be inherited

* internal - All items in the current assembly can access this class.

Get in Touch With Us!

* Subscribe and get Coding 101 automatically at TWiT.tv!
* Follow PadreSJ and Snubs on Twitter.
* Watch the show live and join the chatroom every Thursday at 1:30pm PST.
* Email us at Padre@twit.tv and Shannon@twit.tv.
* Join our Google+ Community!

Download or subscribe to this show at twit.tv/code. Also, check out our transcripts.

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Running time: 44:57