2010/7/31のLTの虎のスライド。PostgreSQL上でPerl6を動かすPL/Parrot & PL/Perl6の紹介です。

1. PL/PERL6
@choplin
2010 7 31 1

2. 
 @choplin
 Bioinformatician
@Perl
-­‐>
 Web
&
DB
programmer@Server
Side
JavaScript
 @
 okuno.a.aa gmail.com
2010 7 31 2

3. Perl
2010 7 31 3

4. LL
Perl
2010 7 31 4

5. 2010 7 31 5

6. Usable
Perl6
Rakudo
Star
2010 7 31 6

7. ?
7
2010 7 31 7

8. Perl6
•Smart
Match
•Junction
•etc.
2010 7 31 8

9. !
2010 7 31 9

10. Cool!
2010 7 31 10

11. 2010 7 31 11

12. 2010 7 31 12

13. 10
2010 7 31 13

14. Perl7?
2010 7 31 14

15. 2010 7 31 15

16. 2010 7 31 16

17. 17
2010 7 31 17

18. =
PL/Perl6
2010 7 31 18

19. PL/Perl6
•PL
=
Procedural
Language
•PostgreSQL
•PostgreSQL Perl6
2010 7 31 19

20. PL/Perl6
•PL/Parrot
(by
Jonathan
"Duke"
Leto
)
PL/Perl6
PL/Parrot
PostgreSQL
2010 7 31 20

21. PL/Perl6 LL
!
$psql
-­‐C
“CREATE
FUNCTION
hello()
RETURNS
text
AS
$$
return
‘hello’
$$
LANGUAGE
plperl6;
SELECT
hello();”
hello()
-­‐-­‐-­‐-­‐-­‐-­‐-­‐
hello
21
2010 7 31 21

22. PL/Perl6
Perl6
:
Object
Oriented
+
SQL
:
Functional
Oriented
( )
2010 7 31 22

23. 2010 7 31 23

24.
2010 7 31 24

25. SQL
25
2010 7 31 25

26. Map
2010 7 31 26

27. CREATE
FUNCTION
perl_array()
RETURNS
text
AS
$$
my
$ary
=
"1t2t3t4";
return
$ary.join('t');
$$
LANGUAGE
plperl6;
CREATE
FUNCTION
perl_factorial(integer)
RETURNS
integer
AS
$$
my
$ret
=
1;
for
1..@_[0]
{
$ret
*=
$_
}
return
$ret;
$$
LANGUAGE
plperl6;
SELECT
perl_factorial(elem)
FROM
(
SELECT
CAST(unnest(string_to_array(perl_array(),
't'))
AS
integer
AS
elem
)array
;
2010 7 31 27

28. Reduce
2010 7 31 28

29. CREATE
FUNCTION
perl_array()
RETURNS
text
AS
$$
my
$ary
=
"1t2t3t4";
return
$ary.join('t');
$$
LANGUAGE
plperl6;
SELECT
CASE
mod(col,
2)
WHEN
0
THEN
'odd'
WHEN
1
THEN
'even'
END
AS
mod
,count(col)
FROM
(
SELECT
CAST(unnest(string_to_array(perl_array(),
't'))
AS
integer)
AS
elem
)array
GROUP
BY
mod
2010 7 31 29

30. 2010 7 31 30

31. Perl6
map
{factorial($_)},
@array;
my
@tmp
=
map
{%count{$_}++},
(map
{($_
%
2)
??
'even'
!!
'odd'},
@ary);
2010 7 31 31

32. 32
2010 7 31 32

33. Rakudo
Star
LWP::Simple
JSON::Tiny
33
2010 7 31 33

34. CREATE
FUNCTION
twitter_public_timeline()
RETURNS
text
AS
$$
use
LWP::Simple;
use
JSON::Tiny;
my
$url
=
'http://api.twitter.com/1/statuses/
public_timeline.json';
my
$lwp
=
LWP::Simple.new;
my
$content
=
$lwp.get($url);
my
$json
=
from-­‐json($content);
my
@ary;
for
$json.values
-­‐>
$post{
@ary.push($post<text>)
}
return
@ary.join("t");
$$
LANGUAGE
plperl6;
SELECT
twitter_public_timeline();
2010 7 31 34

35. psql:twitter.sql:31:
server
closed
the
connection
unexpectedly
This
probably
means
he
server
terminated
abnormally
before
of
while
processing
the
request.
psql:twiter.sql:31:
connection
to
server
was
lost
?
35
2010 7 31 35

36. 2010 7 31 36

37. Perl5
CREATE
FUNCTION
twitter_public_timeline()
RETURNS
text
AS
$$
use
LWP::Simple;
use
JSON;
my
$url
=
'http://api.twitter.com/1/statuses/
public_timeline.json';
my
$content
=
get($url);
my
$json
=
decode_json($content);
my
@ary;
for
my
$post
(@{
$json
}){push(@ary,
$post-­‐>{text})}
return
join
"t",
@ary;
$$
LANGUAGE
plperlu;
SELECT
twitter_public_timeline;
2010 7 31 37

38. $psql -f twitter_perl5.sql
twitter_public_timeline
!
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
putzz pensei qe era minaa :X (@piconn live on http://twitcam.com/1ezjg)
Ok el #TL esta demasiado X.. chao pescao!
(/_;)
Royal Links in Vegas Simulates British Open Venues http://bit.ly/bBJcIT
Calling my sister & i'm scared.
"a necessidade de se manter um histórico é a de poder reler, ver
erros e corrigi-los...e pq é engraçado reler as lezeras de sempre ^^"
será que isso é a esperança do meu curso de fotografia indo embora? ):
alhamdulillah uang 50 rb dr gd. Q gue yg ilang entah berantah,skr d
ganti berkali lipat dr gd. Q jg,terima kasih Allah :)
RT @amochoco:
Jahatttt gak boleh ijin...hikss
How To Make Money Blogging... Big Money http://bit.ly/aIkMuu
3
!!!
♪ RT @9_kumi_3:
@NaluHawaii ♪
kasih gue kelinci dong..
sinceramente, eu acho que eu vou chorar quando Hannah Montana
acabar... eu sou muuuuuito apaixonada por essa série...
Photo: manhattan skyline http://tumblr.com/xxwel6auo
Shit playin cards drinkin what's up???!!
Perl5 !
mission accomplished.!!
(20 rows)
38
2010 7 31 38

39.
2010 7 31 39

40. !!?
http://leto.net/dukeleto.pl/2010/06/rakudo-­‐perl-­‐6-­‐in-­‐your-­‐postgresql-­‐database.html
2010 7 31 40

41. Leto
++,
Moritz
Lenz++
http://groups.google.com/group/plparrot/browse_thread/thread/7aebe2e5a043e175
2010 7 31 41

42.
PL/Perl6
2010 7 31 42

43. SQL
2010 7 31 43

44. See
more
about
PL/Parrot
and
PL/Perl6
http://pl.parrot.org/
http://github.com/leto/plparrot
http://groups.google.com/group/plparrot
2010 7 31 44