2010/7/31 LTの虎@LL Tiger

PL/PERL6

@choplin

2010 7 31 1



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

2010 7 31 2

LL
Perl

2010 7 31 4

Usable
Perl6

Rakudo
Star

2010 7 31 6

Perl6

•Smart
Match
•Junction
•etc.

2010 7 31 8

Perl7?

2010 7 31 14

=

PL/Perl6

2010 7 31 18

PL/Perl6

•PL
=
Procedural
Language
•PostgreSQL

•PostgreSQL Perl6

2010 7 31 19

PL/Perl6
•PL/Parrot
(by
Jonathan
"Duke"

Leto

)

PL/Perl6
PL/Parrot

PostgreSQL
2010 7 31 20

PL/Perl6 LL

!
$psql
-‐C
“CREATE
FUNCTION
hello()

RETURNS
text
AS
$$
return
‘hello’
$$

LANGUAGE
plperl6;
SELECT
hello();”
hello()
-‐-‐-‐-‐-‐-‐-‐
hello
21

2010 7 31 21

PL/Perl6

Perl6
:
Object
Oriented
+
SQL
:
Functional
Oriented
( )

2010 7 31 22

SQL

25

2010 7 31 25

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

Reduce

2010 7 31 28

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

Perl6
map
{factorial($_)},
@array;

my
@tmp
=
map
{%count{$_}++},
(map
{($_
%
2)
??

'even'
!!
'odd'},
@ary);
2010 7 31 31

Rakudo
Star
LWP::Simple
JSON::Tiny

33

2010 7 31 33

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

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

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

$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

!!?

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

2010 7 31 40

Leto
++,
Moritz
Lenz++

http://groups.google.com/group/plparrot/browse_thread/thread/7aebe2e5a043e175

2010 7 31 41

PL/Perl6

2010 7 31 42

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

2010/7/31 LTの虎@LL Tiger

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2010/7/31 LTの虎@LL Tiger