1. LING/C SC/PSYC 438/538
Lecture 9
Sandiway Fong

2. Administrivia Out of town: no class on October 23rd Homework 3 review
Perl references
cpanm

3. Clickbait Headlines curiosity/hyperbole feature/score: nasty surprise
six figures
massive
craziest
radical
strange
leak
profound
scary
controversial decision
suddenly
smart/successful people
X things/ways
retire early
work from home
discover/discovery
near bankruptcy
confirm
reveal
syntax of headlines:
How this/these …
How to .. without …
How …
These … will ..
When it comes to …
… reasons why …
… never use …
… thing you have to do to ...
… that must change after …

4. Headline frequency

5. Headline frequency
Google hits

6. clickmask.com
Acknowledgment: Melissa Thomas

7. clickmask.com

8. Hyperbole in fiction: emphatic exaggeration
literature.html

9. Hyperbole in fiction: comic effect

10. Hyperbole in poetry

11. Hyperbole in advertising

12. Advertising slogans Not all exaggeration/hyperbolic

13. Perl: more complex data structures
Arrays and hashes may only contain scalars
Question: How to accomplish nesting, i.e. put non-scalars inside?
Answer: use references (pointers), which happen to be scalars
(actually a reference is just an unsigned number: computer address)

14. Perl: References Two ways to make a reference:
Remember bracketing when initializing:
( ) List – can be used for both arrays and hashes
[] Reference to an array
{} Reference to a hash
Two ways to make a reference:

15. Perl: References Example: array of arrays
Note: uses Make Rule 2: square brackets
Let’s figure out what the following mean:
de-reference

16. Perl: References
Looping (using for/foreach) with array/hash references:
Careful! $aref->[3] and $aref[3] are different

17. Perl: References Perl code: What happens here? $a = [1, 2, 3, 4, 5];
print $a+1, "\n";
What happens here?

18. Perl: References
Looping (using for/foreach) with array/hash references:
Careful! $href->{‘red’} and $href{‘red’} are different.

19. CPAN Minus https://www.cpan.org Various installers for Perl modules:
cpanm (CPAN Minus)
install (various ways)
cd ~/bin (a directory where you want it to be)
curl -L -o cpanm
chmod +x cpanm
cpan
cpanp

20. Python: pip (pip3)
pip install

21. CPAN Minus
Ubuntu:
Ubuntu: sudo apt-get cpanminus

22. MacPorts
port selfupdate
port install

23. Where are Perl modules stored?
@INC array variable
perl -e 'print "$_\n"
/opt/local/lib/perl5/site_perl/5.24/darwin-thread-multi-2level
/opt/local/lib/perl5/site_perl/5.24
/opt/local/lib/perl5/vendor_perl/5.24/darwin-thread-multi-2level
/opt/local/lib/perl5/vendor_perl/5.24
/opt/local/lib/perl5/5.24/darwin-thread-multi-2level
/opt/local/lib/perl5/5.24 .
perldoc -lm Lingua::EN::CMUDict /opt/local/lib/perl5/site_perl/5.24/Lingua/EN/CMUDict.pm
No module found for "Lingua::EN::CMUDict".

24. Example: a day of week calculator
perl dow.perl
dow.perl
Can't locate Date/Calc.pm (you may need to install the Date::Calc module) contains: /opt/local/lib/perl5/site_perl/5.24/dar win-thread-multi-2level /opt/local/lib/perl5/site_perl/5.24 /opt/local/lib/perl5/vendor_perl/5.24/d arwin-thread-multi-2level /opt/local/lib/perl5/vendor_perl/5.24 /opt/local/lib/perl5/5.24/darwin- thread-multi-2level /opt/local/lib/perl5/5.24 .) at dow.perl line 1. BEGIN failed--compilation aborted at dow.perl line 1.

25. Perl: cpanm Why? perldoc -lm Date::Calc
No module found for "Date::Calc".
Why?

26. Perl: cpanm

27. Perl: Date::Calc perldoc -lm Date::Calc
/opt/local/lib/perl5/site_perl/5.26/Date/Calc.pm

28. Example: a day of week calculator
perl dow.perl
usage: month day year
perl dow.perl
9/18/2018 falls on a Tuesday
9/18/2018 is today
perl dow.perl
9/18/2017 falls on a Monday
perl dow.perl
9/18/2016 falls on a Sunday
9/18/2015 falls on a Friday

29. localtime
Date::Calc
also Now()
Built-in:
all numbers