Schedule

Schedule

Tuesday, September 23

1411495200 MacBreak Weekly
1411502400 Security Now
1411509600 Before You Buy
1411513200 Tech News 2Night
1411516800 All About Android
1411525800 Padre's Corner

Wednesday, September 24

1411572600 FLOSS Weekly
1411578000 Tech News Today
1411581600 Windows Weekly
1411588800 This Week in Google
1411599600 Tech News 2Night
1411601400 redditUP
1411606800 Ham Nation

Thursday, September 25

1411664400 Tech News Today
1411668000 Know How...
1411671600 The Social Hour
1411677000 Coding 101
1411680600 Home Theater Geeks
1411686000 Tech News 2Night
1411687800 The Giz Wiz
1411696800 OMGcraft

Friday, September 26

1411750800 Tech News Today
1411754400 This Week in Law
1411761600 Android App Arena
1411772400 Tech News 2Night

Saturday, September 27

1411840800 The Tech Guy

Sunday, September 28

1411927200 The Tech Guy
1411941600 This Week in Tech

Monday, September 29

1412010000 Tech News Today
1412013600 Triangulation
1412019000 iPad Today
1412031600 Tech News 2Night
1412033400 Marketing Mavericks

Tuesday, September 30

1412096400 Tech News Today
1412100000 MacBreak Weekly
1412107200 Security Now
1412114400 Before You Buy
1412118000 Tech News 2Night
1412121600 All About Android
1412130600 Padre's Corner

Wednesday, October 1

1412177400 FLOSS Weekly
1412182800 Tech News Today
1412186400 Windows Weekly
1412193600 This Week in Google
1412204400 Tech News 2Night
1412206200 redditUP
1412211600 Ham Nation

Thursday, October 2

1412269200 Tech News Today
1412272800 Know How...
1412276400 The Social Hour
1412281800 Coding 101
1412285400 Home Theater Geeks
1412290800 Tech News 2Night
1412292600 The Giz Wiz
1412301600 OMGcraft

Friday, October 3

1412355600 Tech News Today

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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"

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