Schedule

Schedule

Sunday, February 1

1422828000 This Week in Tech

Monday, February 2

1422900000 Tech News Today
1422903600 Triangulation
1422909000 iPad Today
1422921600 Tech News 2Night

Tuesday, February 3

1422986400 Tech News Today
1422990000 MacBreak Weekly
1422997200 Security Now
1423004400 Before You Buy
1423008000 Tech News 2Night
1423011600 All About Android
1423020600 Padre's Corner

Wednesday, February 4

1423067400 FLOSS Weekly
1423072800 Tech News Today
1423076400 Windows Weekly
1423083600 This Week in Google
1423094400 Tech News 2Night
1423096200 Android App Arena
1423101600 Ham Nation

Thursday, February 5

1423159200 Tech News Today
1423162800 Know How...
1423166400 Marketing Mavericks
1423171800 Coding 101
1423175400 Home Theater Geeks
1423180800 Tech News 2Night
1423182600 The Giz Wiz

Friday, February 6

1423245600 Tech News Today
1423249200 This Week in Law
1423267200 Tech News 2Night

Saturday, February 7

1423335600 The Tech Guy

Sunday, February 8

1423422000 The Tech Guy
1423436400 This Week in Tech

Monday, February 9

1423504800 Tech News Today
1423508400 Triangulation
1423513800 iPad Today
1423526400 Tech News 2Night

Tuesday, February 10

1423591200 Tech News Today
1423594800 MacBreak Weekly
1423602000 Security Now
1423609200 Before You Buy
1423612800 Tech News 2Night
1423616400 All About Android
1423625400 Padre's Corner

Wednesday, February 11

1423672200 FLOSS Weekly
1423677600 Tech News Today
1423681200 Windows Weekly
1423688400 This Week in Google

Most Recent Episodes

The Tech Guy
The Tech Guy 1157 January 31st, 2015

Is there a way to make internet browsing safe for the kids at home?

Tech News 2Night

AOL makes cuts, Google makes profits, and China builds a greater firewall.

This Week in Law

Can you pirate your own video game?

Tech News Today
Episode #1186: Cyanogen MS? January 30th, 2015

Google and Amazon report financials

This Week in Computer Hardware

NVIDIA and the GTX 970, PCPer VLAN, and Direct X 12 in Windows 10.

The Giz Wiz
Episode #1503: RIP SkyMall January 29th, 2015

Remembering SkyMall.

Tech News 2Night

Social media announcements, Cortana predicts the Super Bowl

Know How...

Back from Daytona, G+ Feedback, and Networking.

Home Theater Geeks

Ultra High Def, the future of TV, and the alliance.

Coding 101

The philosophy of assembly.

Coding 101 31

C# Objects and Classes

August 21 2014

Hosts: Fr. Robert Ballecer, SJ and Shannon Morse

Snubs Compiled
Microsoft Visual Studio Express 13 Windows

MonoDeveloper OSX

Ivory Tower
Way back in Episode 6 of the first module of Coding 101, we talked a little about "Object Oriented Programming"
* OOP is an approach to programming that divides the process -- the "problem solving" of a program into modular, reusable pieces.

Before OOP, you wrote your program, then you considered how data might be processed by your code.
* In OOP, you don't think of data seperate from code -- instead, you think of "Objects" which combine code and data. --
** You wrote your code, which then processed data
** OOP unified the two: instead of having data and code, you have a "object" that combines the two.
** Instead of having pieces of code that handle sets of data, you now have OBJECTS that model In-Real-Life logic with In-Real-Life sets of data.

In other words... you code problem-solving, instead of process -- It was a huge jump.
*** Easier to Understand
*** Easier to Maintain
*** Easier to Upgrade

Now let's talk about CLASSES and OBJECTS
* Back in Module 1, we talked about coding functions or "methods"

For Example
"public int answer(int a, int b)
{

int c = a + b;
return c;

}"
** This will create a public function called "answer" that will accept two variables and return an integer value when called.
** We would call this function by writing:
answer(1,2)
** and it would return:
3

That function or "method" combines variables and code that processes those variables

A CLASS combines multiple "methods" and variables.
* A "class" is a blue print that can be created multiple times.
* When the blue print is used to create -- it creates an "OBJECT of that class
* We can create as many objects of a class, and when we're done with it, it's removed from memory.

IMPORTANT!!! --- Don't Interchange "Class" and "Object"
-- A Class is NOT an Object
-- A Class is the blueprint from which an Object is created.
-- A Class DEFINES an object, but it is not an object itself (Can I repeat the same thing more times?)
-- An OBJECT is NOT a class
-- An object is an INSTANCE of a class (based on that "blue print")
-- An object exists in memory ... a class does not (i.e. a class is not "real" until it is used to create an object of that class.)

Defining a Class is easy:
"public class C101
{
//Fields, methods, properties, events... everything in the ""blue print"" goes in here
}"

Creating an OBJECT of a class:
* We use the keyword "new" to create an instance of a class (aka an "object")
* In our example, we've created a class named "C101"
-- If we wanted to create an instance of that class (aka an "object") we would write:
***** "C101 object1 = new C101();"

This will create an instance of the class "C101" called "object1"
* The reason why we write "C101" twice is because we're
1. Creating an REFERENCE to an object, named "object1" that is based on the class "C101"
2. Then we're actually CREATING a "new" instance of the class "C101()" that can be referenced with "object1"

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!
* Check out our trancripts.