Schedule

Schedule

Sunday, May 24

1432490400 The Tech Guy
1432504800 This Week in Tech

Monday, May 25

1432573200 Tech News Today
1432576800 Triangulation
1432582200 iOS Today
1432589400 Coding 101
1432594800 Tech News 2Night

Tuesday, May 26

1432659600 Tech News Today
1432663200 MacBreak Weekly
1432672200 Security Now
1432681200 Tech News 2Night
1432684800 All About Android

Wednesday, May 27

1432740600 FLOSS Weekly
1432746000 Tech News Today
1432749600 Windows Weekly
1432756800 This Week in Google
1432767600 Tech News 2Night
1432769400 Android App Arena
1432774800 Ham Nation

Thursday, May 28

1432832400 Tech News Today
1432836000 Know How...
1432846800 Home Theater Geeks
1432854000 Tech News 2Night

Friday, May 29

1432918800 Tech News Today
1432922400 This Week in Law
1432933200 Before You Buy
1432940400 Tech News 2Night

Saturday, May 30

1433008800 The Tech Guy

Sunday, May 31

1433095200 The Tech Guy
1433109600 This Week in Tech

Monday, June 1

1433178000 Tech News Today
1433181600 Triangulation
1433187000 iOS Today
1433194200 Coding 101
1433199600 Tech News 2Night

Tuesday, June 2

1433264400 Tech News Today
1433268000 MacBreak Weekly
1433277000 Security Now
1433286000 Tech News 2Night
1433289600 All About Android

Wednesday, June 3

1433345400 FLOSS Weekly
1433350800 Tech News Today

Most Recent Episodes

The New Screen Savers

Delighting audiences for decades, our guest Martin Sargent

The Tech Guy
The Tech Guy 1189 May 23rd, 2015

Finding a low cost telephone line that works during power outages.

Before You Buy

Myriam Joire reviews the HP Spectre x360 laptop.

This Week in Enterprise Tech

Your SSDs are DOOMED!

This Week in Law

A California appeals court lifts ban on the "Innocence of Muslims" video on YouTube.

Tech News 2Night

Selena Larsen joins us to discuss accessibility, iOS9, and WWDC rumors.

Tech News Today

Apple Round-up, Google Scrambles, and Russia threatens.

Home Theater Geeks

HDR, High Frame Rate, virtual reality, and more.

Tech News 2Night

Jill Duffy gives us tech tips for booking travel

Know How...

Padre gets hit by a packet storm.

Coding 101 3

Do While Conditioner

February 6 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 taking a look at Xamarin Studio on Mac OSX, While Loops, For Loops, and Relational Operators. You can also check out our transcripts here.

Reviewing While Loops and A Mac OSX IDE Option

How do I download and compile my first code on a Mac?
Download the C# Compiler from the MonoDevelop website.
* Choose the Xamarin Studio package and download it.
* Click on the Mono + GTK# download link.
* Download the Intel Mac: Runtime or SDK links and install.
* Once all three programs are installed, open the Xamarin Studio application.
* From the main page, choose New, C#, Console Application.
* Start writing your code!

My While Loop looks like this:
* int counter = 368; - This will give me an integer variable called counter, which equals 368.
* while (counter > 0) - This is the start of my while loop, with counter being greater than zero.
*
Console.WriteLine(counter); - The loop states that every time my counter is greater than zero, to write out the counter number on my output.
*
counter = counter - 5;
- This changes the counter variable. So each time my while loop restarts, it's going to subtract 5 from the total, until the counter is no longer greater than zero.

Find the Code for ALL of our episodes HERE!

Ivory Tower!

Relational Operators

Remember the while loop?

The loop has a "()" section that determines if the loop will run. That section is called the "conditon" - as long as the condition is TRUE, the loop will run.

Those conditions use "Relationtional Operators" - Code elements that let you compare two operators against a relationship.Those relational operators are:
"<" Less Than
">" Greater Than
">=" Greater Than or Equal to
"<=" Less that or Equal To
"==" Equal To
"!=" Not Equal To

(3==3) is true, (2<1) is false, (71>=23) is true. Those would all work within that section, h
However, those conditions are ALWAYS true or ALWAYS false. That's useless in a loop because the loop would either never terminate, or it would never run. That's why we use variable within the condition, so that we can change the "trueness" or "falseness" of a condition.

for loop

The "for loop" is a "pretest" loop. Which means that, like the while loop, it will test the expression within the condition before ever running the code within the loop. (There IS a technique to make it a post-test loop, but we'll get to that later.) Unlike the "while loop", which requires you to seperately initialize the counter, create the condition and set the interator (step), every "for loop" defines its own initializer, condition, and iterator.

Example:

for (int counter=5; counter <= 10; counter++)

{

console.write (""The count is currently "");

console.writeln (counter);

}"

The Output will be:

The count is currently 5

The count is currently 6

The count is currently 7

The count is currently 8

The count is currently 9

The count is currently 10

1. The for loop will initialize an INT variable named "counter" and assign it the value of "5"
2. The for loop will check the condition of the expression "counter >= 10" -- since we set the value of counter at 5, the condition is true.
3. If the condition is true, the loop will execute
4. the for loop will then perform the "step" -- the increment or decrement that we specify

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.< br/>
* Email us at Padre@twit.tv and Shannon@twit.tv.

Download or subscribe to this show at twit.tv/code.

Bandwidth for Coding 101 is provided by Cachefly.

Running time: 38:28

Sponsors: