Schedule

Schedule

Tuesday, July 29

1406653200 Tech News Today
1406656800 MacBreak Weekly
1406664000 Security Now
1406671200 Before You Buy
1406674800 Tech News 2Night
1406678400 All About Android

Wednesday, July 30

1406734200 FLOSS Weekly
1406739600 Tech News Today
1406743200 Windows Weekly
1406750400 This Week in Google
1406761200 Tech News 2Night
1406763000 redditUP
1406768400 Ham Nation

Thursday, July 31

1406826000 Tech News Today
1406829600 Know How...
1406833200 The Social Hour
1406838600 Coding 101
1406842200 Home Theater Geeks
1406847600 Tech News 2Night
1406849400 The Giz Wiz
1406858400 OMGcraft

Friday, August 1

1406912400 Tech News Today
1406916000 This Week in Law
1406923200 Android App Arena
1406934000 Tech News 2Night

Saturday, August 2

1407002400 The Tech Guy

Sunday, August 3

1407088800 The Tech Guy
1407103200 This Week in Tech

Monday, August 4

1407171600 Tech News Today
1407175200 Triangulation
1407180600 iPad Today
1407193200 Tech News 2Night
1407195000 Marketing Mavericks

Tuesday, August 5

1407258000 Tech News Today
1407261600 MacBreak Weekly
1407268800 Security Now
1407276000 Before You Buy
1407279600 Tech News 2Night
1407283200 All About Android

Wednesday, August 6

1407339000 FLOSS Weekly
1407344400 Tech News Today
1407348000 Windows Weekly
1407355200 This Week in Google
1407366000 Tech News 2Night
1407367800 redditUP
1407373200 Ham Nation

Thursday, August 7

1407430800 Tech News Today
1407434400 Know How...
1407438000 The Social Hour
1407443400 Coding 101
1407447000 Home Theater Geeks
1407452400 Tech News 2Night
1407454200 The Giz Wiz
1407463200 OMGcraft

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Coding 101 24

Perl: Command Line Search and Replace

July 3 2014

Hosts: Fr. Robert Ballecer, SJ and Shannon Morse

Guest: Patrick Delahanty

The Code for today's show is available at our: Github

Ivory Tower

We learned in the last episode that "Regular Expressions" or "RegEx" is just another way of saying, "find a pattern"
* We learned that we can use RegEx to search a string for that pattern according to a set of parameters and modifiers that WE determine

The usage of RegEx is as Follows:
$nameofstring =~ (Match Operator) / (expression) / (expression) / (Match Expression Operator)

Which means:
$nameofstring =~ (action to take)/(pattern to match)/(pattern to replace match with)/(how to search)

Useful Match Operators
m/ Match Regular Expression
s/ Substitite Regular Expression
tr/ Tranliterate Regular expression

Useful Match Operator Modifiers
g Match globally, find ALL occurences
i case insensitive
m treat string as multiple lines
o Evaluate the expression only once
s treat string as single line
x Use extended regular expressions (Allows you to use white space in the expression)

Get in Touch With Us!

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