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Schedule

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Monday, March 2

1425319200 Tech News Today
1425322800 Triangulation
1425328200 iPad Today
1425335400 Coding 101
1425340800 Tech News 2Night

Tuesday, March 3

1425405600 Tech News Today
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1425418200 Security Now
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1425430800 All About Android

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1425486600 FLOSS Weekly
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1425515400 Android App Arena
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Thursday, March 5

1425578400 Tech News Today
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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

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This Week in Law
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Coding 101

Let's talk about structures.

Know How...

Airbag for your Motorcycle.

Coding 101 21

Perl: Getting Started

June 12 2014

Hosts: Fr. Robert Ballecer, SJ and Shannon Morse

Guest: Patrick Delahanty

Ivory Tower

Control Structures
* The structure of Perl is more like C# than Python
-- While Python uses whitespace to delineate lines of code, Perl uses ";" a semicolon
-- Also like C#, Perl uses "{}" Curly brackets to create BLOCKS of code

Variables
* Much like Python, Perl doesn't require you to declare variables seperately from expressions.
* You can declare variable WITHIN the expression.

Perl offers three types of variables: Scalars, Arays and Associative Arrays
* We're going to show you the first two: Scalars and Arrays

Printing in Perl
* Printing in Perl works much in the same way as printing in Python
* You can print numbers, strings, variables, and combinations thereof.

Scalars
* These are either numbers or strings
* Perl doesn't require you to mark a variable as either a number or a string... it all looks the same to Perl
* Perl also doesn't require you to differerentiate between integers and real numbers

Usage of Scalars:
* You declare a scalar variable by using "$" right befofe the name of the variable
$Var1 = 28 Creates a variable named "Var1" containing the integer "4"
$Var2 = "Coding 101" Crates a variable named "Var2" containing the string "Coding 101"
$Var3 = 3.14 Creates a variable named "Var3" containing the decimal number "4.5"

Arrays
* An array is a ONE-DIMENSIONAL indexed list of Scalar variables

Usage of Arrays
* You declare an array by using "@" right before the name of the array
* Individual scalar variables within the array can be accessed by pointing to their index with the SCALAR identifier
@C101 = ("Padre", "Snubs", "Bryan") Creates an array named "C101" and fills it with the strings, "Padre", "Snubs" and "Bryan"
@coding = @c101 Creates an array called, "coding" and fills it with the values from the array "c101"
$C101[2] = "Cranky Hippo" Changes the value in the third item in the array "C101" from "Bryan" to "Cranky Hippo"

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.
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*Check out our transcripts.

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Running time: 42:03