DevLOVE "grow-grow Groovy" seminar handout in Japan, TOKYO at 24 Jan 2011.

1. 2011.1.24

2. Slide # 2 DevLOVE Groovy 2011.1.24

3. http://d.hatena.ne.jp/uehaj/
Slide # 3 DevLOVE Groovy 2011.1.24

4. new! JJUG CCC
update
Slide # 4 DevLOVE Groovy 2011.1.24

5. Slide # 5 DevLOVE Groovy 2011.1.24

6. Slide # 6 DevLOVE Groovy 2011.1.24

7. import java.io.*; BufferedReader bis = new BufferedReader
import java.net.*; (new InputStreamReader(ins));
String line;
public class SocketAccess { while ((line = bis.readLine()) != null) {
System.out.println(line);
public static void main(String[] args) { }
Socket soc = null; }
InputStream ins = null; catch (IOException e) {
OutputStream outs = null; e.printStackTrace();
try { try {
soc = new Socket("www.java-users.jp", 80); if (soc != null) soc.close();
ins = soc.getInputStream(); }
outs = soc.getOutputStream(); catch(IOException ex) {}
outs.write("GET / HTTP/1.0nn".getBytes }
()); }
}
Slide # 7 DevLOVE Groovy 2011.1.24

8. import java.io.*; BufferedReader bis = new BufferedReader
import java.net.*; (new InputStreamReader(ins));
String line;
public class SocketAccess { while ((line = bis.readLine()) != null) {
System.out.println(line);
public static void main(String[] args) { }
Socket soc = null; }
InputStream ins = null; catch (IOException e) {
OutputStream outs = null; e.printStackTrace();
try { try {
soc = new Socket("www.java-users.jp", 80); if (soc != null) soc.close();
ins = soc.getInputStream(); }
outs = soc.getOutputStream(); catch(IOException ex) {}
outs.write("GET / HTTP/1.0nn".getBytes }
()); }
}
Slide # 8 DevLOVE Groovy 2011.1.24

9. import java.io.*; BufferedReader bis = new BufferedReader
import java.net.*; (new InputStreamReader(ins));
String line;
public class SocketAccess { while ((line = bis.readLine()) != null) {
System.out.println(line);
public static void main(String[] args) { }
Socket soc = null; }
InputStream ins = null; catch (IOException e) {
OutputStream outs = null; e.printStackTrace();
try { try {
soc = new Socket("www.java-users.jp", 80); if (soc != null) soc.close();
ins = soc.getInputStream(); }
outs = soc.getOutputStream(); catch(IOException ex) {}
outs.write("GET / HTTP/1.0nn".getBytes }
()); }
}
Slide # 8 DevLOVE Groovy 2011.1.24

10. import java.io.*; BufferedReader bis = new BufferedReader
import java.net.*; (new InputStreamReader(ins));
String line;
public class SocketAccess { while ((line = bis.readLine()) != null) {
System.out.println(line);
public static void main(String[] args) { }
Socket soc = null; }
InputStream ins = null; catch (IOException e) {
OutputStream outs = null; e.printStackTrace();
try { try {
soc = new Socket("www.java-users.jp", 80); if (soc != null) soc.close();
ins = soc.getInputStream(); }
outs = soc.getOutputStream(); catch(IOException ex) {}
outs.write("GET / HTTP/1.0nn".getBytes }
()); }
}
Slide # 9 DevLOVE Groovy 2011.1.24

11. import java.io.*; BufferedReader bis = new BufferedReader
import java.net.*; (new InputStreamReader(ins));
String line;
public class SocketAccess { while ((line = bis.readLine()) != null) {
System.out.println(line);
public static void main(String[] args) { }
Socket soc = null; }
InputStream ins = null; catch (IOException e) {
OutputStream outs = null; e.printStackTrace();
try { try {
soc = new Socket("www.java-users.jp", 80); if (soc != null) soc.close();
ins = soc.getInputStream(); }
outs = soc.getOutputStream(); catch(IOException ex) {}
outs.write("GET / HTTP/1.0nn".getBytes }
()); }
}
Slide # 9 DevLOVE Groovy 2011.1.24

12. BufferedReader bis = new BufferedReader
(new InputStreamReader(ins));
String line;
public class SocketAccess { while ((line = bis.readLine()) != null) {
System.out.println(line);
public static void main(String[] args) { }
Socket soc = null; }
InputStream ins = null; catch (IOException e) {
OutputStream outs = null; e.printStackTrace();
try { try {
soc = new Socket("www.java-users.jp", 80); if (soc != null) soc.close();
ins = soc.getInputStream(); }
outs = soc.getOutputStream(); catch(IOException ex) {}
outs.write("GET / HTTP/1.0nn".getBytes }
()); }
}
Slide #10 DevLOVE Groovy 2011.1.24

13. BufferedReader bis = new BufferedReader
(new InputStreamReader(ins));
String line;
public class SocketAccess { while ((line = bis.readLine()) != null) {
System.out.println(line);
public static void main(String[] args) { }
Socket soc = null; }
InputStream ins = null; catch (IOException e) {
OutputStream outs = null; e.printStackTrace();
try { try {
soc = new Socket("www.java-users.jp", 80); if (soc != null) soc.close();
ins = soc.getInputStream(); }
outs = soc.getOutputStream(); catch(IOException ex) {}
outs.write("GET / HTTP/1.0nn".getBytes }
()); }
}
Slide #10 DevLOVE Groovy 2011.1.24

14. BufferedReader bis = new BufferedReader
(new InputStreamReader(ins));
String line;
while ((line = bis.readLine()) != null) {
System.out.println(line);
}
Socket soc = null; }
InputStream ins = null; catch (IOException e) {
OutputStream outs = null; e.printStackTrace();
try { try {
soc = new Socket("www.java-users.jp", 80); if (soc != null) soc.close();
ins = soc.getInputStream(); }
outs = soc.getOutputStream(); catch(IOException ex) {}
outs.write("GET / HTTP/1.0nn".getBytes }
());
Slide #11 DevLOVE Groovy 2011.1.24

15. BufferedReader bis = new BufferedReader
(new InputStreamReader(ins));
String line;
while ((line = bis.readLine()) != null) {
System.out.println(line);
}
Socket soc = null; }
InputStream ins = null; catch (IOException e) {
OutputStream outs = null; e.printStackTrace();
try { try {
soc = new Socket("www.java-users.jp", 80); if (soc != null) soc.close();
ins = soc.getInputStream(); }
outs = soc.getOutputStream(); catch(IOException ex) {}
outs.write("GET / HTTP/1.0nn".getBytes }
());
Slide #11 DevLOVE Groovy 2011.1.24

16. BufferedReader bis = new BufferedReader
(new InputStreamReader(ins));
String line;
while ((line = bis.readLine()) != null) {
System.out.println(line);
}
Socket soc = null;
InputStream ins = null;
OutputStream outs = null;
soc = new Socket("www.java-users.jp", 80); if (soc != null) soc.close();
ins = soc.getInputStream();
outs = soc.getOutputStream();
outs.write("GET / HTTP/1.0nn".getBytes
());
Slide #12 DevLOVE Groovy 2011.1.24

17. BufferedReader bis = new BufferedReader
(new InputStreamReader(ins));
String line;
while ((line = bis.readLine()) != null) {
System.out.println(line);
}
Socket soc = null;
InputStream ins = null;
OutputStream outs = null;
soc = new Socket("www.java-users.jp", 80); if (soc != null) soc.close();
ins = soc.getInputStream();
outs = soc.getOutputStream();
outs.write("GET / HTTP/1.0nn".getBytes
());
Slide #12 DevLOVE Groovy 2011.1.24

18. bis = new BufferedReader(new
InputStreamReader(ins));
def line = null;
while ((line = bis.readLine()) != null) {
System.out.println(line);
}
def soc = null;
def ins = null;
def outs = null;
soc = new Socket("www.java-users.jp", 80); if (soc != null) soc.close();
ins = soc.getInputStream();
outs = soc.getOutputStream();
outs.write("GET / HTTP/1.0nn".getBytes
());
Slide #13 DevLOVE Groovy 2011.1.24

19. bis = new BufferedReader(new
InputStreamReader(ins));
def line = null;
while ((line = bis.readLine()) != null) {
System.out.println(line);
}
def soc = null;
def ins = null;
def outs = null;
soc = new Socket("www.java-users.jp", 80); if (soc != null) soc.close();
ins = soc.getInputStream();
outs = soc.getOutputStream();
outs.write("GET / HTTP/1.0nn".getBytes
());
Slide #13 DevLOVE Groovy 2011.1.24

20. bis = new BufferedReader(new
InputStreamReader(ins));
def line = null;
while ((line = bis.readLine()) != null) {
System.out.println(line);
}
}
new Socket("www.java-users.jp",
80).withStreams { ins, outs ->
outs.write("GET / HTTP/1.0nn".getBytes
());
Slide #14 DevLOVE Groovy 2011.1.24

21. bis = new BufferedReader(new
InputStreamReader(ins));
def line = null;
while ((line = bis.readLine()) != null) {
System.out.println(line);
}
}
new Socket("www.java-users.jp",
80).withStreams { ins, outs ->
outs.write("GET / HTTP/1.0nn".getBytes
());
Slide #14 DevLOVE Groovy 2011.1.24

22. ins.eachLine{ line ->
System.out.println(line);
}
}
new Socket("www.java-users.jp",
80).withStreams { ins, outs ->
outs.write("GET / HTTP/1.0nn".getBytes
());
Slide #15 DevLOVE Groovy 2011.1.24

23. new Socket("www.java-users.jp", 80).withStreams { ins, outs ->
outs.write("GET / HTTP/1.0nn".getBytes());
ins.eachLine { line ->
System.out.println(line);
}
}
Slide #16 DevLOVE Groovy 2011.1.24

24. new Socket("www.java-users.jp", 80).withStreams { ins, outs ->
outs.write("GET / HTTP/1.0nn".getBytes());
ins.eachLine { line ->
System.out.println(line);
}
}
Slide #17 DevLOVE Groovy 2011.1.24

25. new Socket("www.java-users.jp", 80).withStreams { ins, outs ->
outs.write("GET / HTTP/1.0nn".getBytes());
ins.eachLine { line ->
System.out.println(line);
}
}
Slide #17 DevLOVE Groovy 2011.1.24

26. new Socket("www.java-users.jp", 80).withStreams { ins, outs ->
outs.write("GET / HTTP/1.0nn".bytes);
ins.eachLine { line ->
System.out.println(line);
}
}
Slide #18 DevLOVE Groovy 2011.1.24

27. new Socket("www.java-users.jp", 80).withStreams { ins, outs ->
outs.write("GET / HTTP/1.0nn".bytes);
ins.eachLine { line ->
System.out.println(line);
}
}
Slide #18 DevLOVE Groovy 2011.1.24

28. new Socket("www.java-users.jp", 80).withStreams { ins, outs ->
outs.write("GET / HTTP/1.0nn".bytes);
ins.eachLine { line ->
println(line);
}
}
Slide #19 DevLOVE Groovy 2011.1.24

29. new Socket("www.java-users.jp", 80).withStreams { ins, outs ->
outs.write("GET / HTTP/1.0nn".bytes);
ins.eachLine { line ->
println(line);
}
}
Slide #19 DevLOVE Groovy 2011.1.24

30. new Socket("www.java-users.jp", 80).withStreams { ins, outs ->
outs.write("GET / HTTP/1.0nn".bytes);
ins.eachLine {
println(it);
}
}
Slide #20 DevLOVE Groovy 2011.1.24

31. new Socket("www.java-users.jp", 80).withStreams { ins, outs ->
outs.write("GET / HTTP/1.0nn".bytes);
ins.eachLine {
println(it);
}
}
Slide #20 DevLOVE Groovy 2011.1.24

32. new Socket("www.java-users.jp", 80).withStreams { ins, outs ->
outs.write("GET / HTTP/1.0nn".bytes)
ins.eachLine {
println(it)
}
}
Slide #21 DevLOVE Groovy 2011.1.24

33. new Socket("www.java-users.jp", 80).withStreams { ins, outs ->
outs.write("GET / HTTP/1.0nn".bytes)
ins.eachLine {
println(it)
}
}
Slide #21 DevLOVE Groovy 2011.1.24

34. new Socket("www.java-users.jp", 80).withStreams { ins, outs ->
outs.write "GET / HTTP/1.0nn".bytes
ins.eachLine {
println it
}
}
Slide #22 DevLOVE Groovy 2011.1.24

35. println new URL("http://www.java-users.jp").text
Slide #23 DevLOVE Groovy 2011.1.24

36. println new URL("http://www.java-users.jp").text
Java Groovy
Java 7
Slide #23 DevLOVE Groovy 2011.1.24

37. Gaelyk
Grails(Web)
GSQL GSP,GORM
SwingBuilder Griffon(GUI)
MarkupBuilder
GMaven,Maven3
/DSL
Hudson JBoss
Gant FreeMind
Gradle
Spock,EasyB Gpars
Groovy++
Slide #24 DevLOVE Groovy 2011.1.24

38. Slide # 25 DevLOVE Groovy 2011.1.24

39. Slide #26 DevLOVE Groovy 2011.1.24

40. Slide #27 DevLOVE Groovy 2011.1.24

41. @Grab('net.sourceforge.htmlunit:htmlunit:2.8')
import com.gargoylesoftware.htmlunit.WebClient;
// Ant Bzip2
new AntBuilder().bzip2(src:args[0], zipfile:args[0]+".bz2")
// HtmlUnit
url = "http://pukiwiki.example.com/index.php?
plugin=attach&pcmd=upload&page=test"
page = new WebClient().getPage(url)
file = page.getElementById('_p_attach_file')
file.valueAttribute = args[0]+".bz2"
page.getByXPath("//input[@value=' ']")[0].click()
Slide #28 DevLOVE Groovy 2011.1.24

42. @Grab('net.sourceforge.htmlunit:htmlunit:2.8')
import com.gargoylesoftware.htmlunit.WebClient;
// Ant Bzip2
new AntBuilder().bzip2(src:args[0], zipfile:args[0]+".bz2")
// HtmlUnit
url = "http://pukiwiki.example.com/index.php?
plugin=attach&pcmd=upload&page=test"
page = new WebClient().getPage(url)
file = page.getElementById('_p_attach_file')
file.valueAttribute = args[0]+".bz2"
page.getByXPath("//input[@value=' ']")[0].click()
Slide #28 DevLOVE Groovy 2011.1.24

43. @Grab('net.sourceforge.htmlunit:htmlunit:2.8')
import com.gargoylesoftware.htmlunit.WebClient;
// Ant Bzip2
new AntBuilder().bzip2(src:args[0], zipfile:args[0]+".bz2")
// HtmlUnit
url = "http://pukiwiki.example.com/index.php?
plugin=attach&pcmd=upload&page=test"
page = new WebClient().getPage(url)
file = page.getElementById('_p_attach_file')
file.valueAttribute = args[0]+".bz2"
page.getByXPath("//input[@value=' ']")[0].click()
Slide #28 DevLOVE Groovy 2011.1.24

44. @Grab('net.sourceforge.htmlunit:htmlunit:2.8')
import com.gargoylesoftware.htmlunit.WebClient;
// Ant Bzip2
new AntBuilder().bzip2(src:args[0], zipfile:args[0]+".bz2")
// HtmlUnit
url = "http://pukiwiki.example.com/index.php?
plugin=attach&pcmd=upload&page=test"
page = new WebClient().getPage(url)
file = page.getElementById('_p_attach_file')
file.valueAttribute = args[0]+".bz2"
page.getByXPath("//input[@value=' ']")[0].click()
Slide #28 DevLOVE Groovy 2011.1.24

45. @Grab('net.sourceforge.htmlunit:htmlunit:2.8')
import com.gargoylesoftware.htmlunit.WebClient;
Slide #29 DevLOVE Groovy 2011.1.24

46. // Ant Bzip2
new AntBuilder().bzip2(src:args[0], zipfile:args[0]+".bz2")
Slide #30 DevLOVE Groovy 2011.1.24

47. Slide #31 DevLOVE Groovy 2011.1.24

48. cities.csv
,35676000,
,19040000,
= ,1018000,
,5492000,
Slide #31 DevLOVE Groovy 2011.1.24

49. cities.csv
,35676000,
,19040000,
, , = ,1018000,
,5492000,
Slide #31 DevLOVE Groovy 2011.1.24

50. @Grab('com.h2database:h2:1.2.143')
@GrabConfig(systemClassLoader=true)
import groovy.sql.Sql
sql = Sql.newInstance("jdbc:h2:cities")
sql.execute """ CREATE TABLE Cities (
id INT IDENTITY PRIMARY KEY, name VARCHAR,
population DECIMAL(10), country VARCHAR)"""
cities = sql.dataSet("Cities")
new File("cities.csv").splitEachLine(",") { f1, f2, f3 ->
//
cities.add(name:f1, population:f2, country:f3)
}
assert cities.findAll{ it.country==" " &&
it.population>1000000 }.rows()*.name ==
[' ', ' = ( )', ' ', ' ', ' ']
Slide #32 DevLOVE Groovy 2011.1.24

51. @Grab('com.h2database:h2:1.2.143')
@GrabConfig(systemClassLoader=true)
import groovy.sql.Sql
sql = Sql.newInstance("jdbc:h2:cities")
sql.execute """ CREATE TABLE Cities (
id INT IDENTITY PRIMARY KEY, name VARCHAR,
population DECIMAL(10), country VARCHAR)"""
cities = sql.dataSet("Cities")
new File("cities.csv").splitEachLine(",") { f1, f2, f3 ->
//
cities.add(name:f1, population:f2, country:f3)
}
assert cities.findAll{ it.country==" " &&
it.population>1000000 }.rows()*.name ==
[' ', ' = ( )', ' ', ' ', ' ']
Slide #32 DevLOVE Groovy 2011.1.24

52. @Grab('com.h2database:h2:1.2.143')
@GrabConfig(systemClassLoader=true)
import groovy.sql.Sql
sql = Sql.newInstance("jdbc:h2:cities")
sql.execute """ CREATE TABLE Cities (
id INT IDENTITY PRIMARY KEY, name VARCHAR,
population DECIMAL(10), country VARCHAR)"""
cities = sql.dataSet("Cities")
new File("cities.csv").splitEachLine(",") { f1, f2, f3 ->
//
cities.add(name:f1, population:f2, country:f3)
}
assert cities.findAll{ it.country==" " &&
it.population>1000000 }.rows()*.name ==
[' ', ' = ( )', ' ', ' ', ' ']
Slide #32 DevLOVE Groovy 2011.1.24

53. @Grab('com.h2database:h2:1.2.143')
@GrabConfig(systemClassLoader=true)
import groovy.sql.Sql
sql = Sql.newInstance("jdbc:h2:cities")
sql.execute """ CREATE TABLE Cities (
id INT IDENTITY PRIMARY KEY, name VARCHAR,
population DECIMAL(10), country VARCHAR)"""
cities = sql.dataSet("Cities")
new File("cities.csv").splitEachLine(",") { f1, f2, f3 ->
//
cities.add(name:f1, population:f2, country:f3)
}
assert cities.findAll{ it.country==" " &&
it.population>1000000 }.rows()*.name ==
[' ', ' = ( )', ' ', ' ', ' ']
Slide #32 DevLOVE Groovy 2011.1.24

54. @Grab('com.h2database:h2:1.2.143')
@GrabConfig(systemClassLoader=true)
import groovy.sql.Sql
sql = Sql.newInstance("jdbc:h2:cities")
sql.execute """ CREATE TABLE Cities (
id INT IDENTITY PRIMARY KEY, name VARCHAR,
population DECIMAL(10), country VARCHAR)"""
cities = sql.dataSet("Cities")
new File("cities.csv").splitEachLine(",") { f1, f2, f3 ->
//
cities.add(name:f1, population:f2, country:f3)
}
assert cities.findAll{ it.country==" " &&
it.population>1000000 }.rows()*.name ==
[' ', ' = ( )', ' ', ' ', ' ']
Slide #32 DevLOVE Groovy 2011.1.24

55. @Grab('com.h2database:h2:1.2.143')
@GrabConfig(systemClassLoader=true)
import groovy.sql.Sql
Slide #33 DevLOVE Groovy 2011.1.24

56. cities = sql.dataSet("Cities")
new File("cities.csv").splitEachLine(",") { f1, f2, f3 ->
//
cities.add(name:f1, population:f2, country:f3)
}
Slide #34 DevLOVE Groovy 2011.1.24

57. cities = sql.dataSet("Cities")
assert cities.findAll{ it.country==" " &&
it.population>1000000 }.rows()*.name ==
[' ', ' = ( )', ' ', ' ', ' ']
cities = sql.dataSet("Cities")
assert cities.findAll{ it.country==" " }
.findAll{ it.population>1000000 }.rows()*.name ==
[' ', ' = ( )', ' ', ' ', ' ']
Slide #35 DevLOVE Groovy 2011.1.24

58. Slide # 36 DevLOVE Groovy 2011.1.24

59. update
http://d.hatena.ne.jp/ksky/20090618/p1
Slide #37 DevLOVE Groovy 2011.1.24

60. update
!
http://d.hatena.ne.jp/ksky/20090618/p1
Slide #37 DevLOVE Groovy 2011.1.24

61. http://kokucheese.com/event/index/5267/
Slide #38 DevLOVE Groovy 2011.1.24

62. http://bit.ly/g5iE0m
Slide #39 DevLOVE Groovy 2011.1.24

63. Slide # 40 DevLOVE Groovy 2011.1.24

64. Slide #41 DevLOVE Groovy 2011.1.24

65. update
Slide #42 DevLOVE Groovy 2011.1.24

66. http://kobo.github.com/groovyserv/
Slide # 43 DevLOVE Groovy 2011.1.24

67. Slide #44 DevLOVE Groovy 2011.1.24

68. Shell Environment User Groovy
Srcipt
C
LA
SS . lin
PA
cm
System.in
TH
d
System.out
en
e
v
SYstem.err
ar
gs
Ctrl-C
groovyclient TCP/IP
groovyserver
n
di
st
de t
st dou
rr
JavaVM
st
exit status
File System
Authentication
Cookie File
Slide # DevLOVE Groovy 2011.1.24
45

69. User Groovy
Shell Environment
Srcipt
C
LA
System.in
SS . lin
PA
cm
System.out
TH
d
SYstem.err
en
e
v
ar
gs
Ctrl-C
groovy
n
di
st
de t
st dou
JavaVM
rr
st
exit status
File System
Slide #46 DevLOVE Groovy 2011.1.24

70. 19.6
normal groovy 3.041 1.0
Installer groovy 1.262 2.4
groovyclient(C ) 0.155 19.6
groovyclient(Ruby ) 0.193 15.8
•Groovy 1.7.3, GroovyServ 0.4-SNAPSHOT, WinXP SP3,Core2Duo 2GHz,JDK1
Slide # •time
DevLOVE real 10
Groovy 2011.1.24

71. 35.8
normal groovy 1.112 1.0
Mac Ports groovy(1.7.2) 0.321 3.5
groovyclient(C ) 0.031 35.8
groovyclient(Ruby ) 0.041 27.1
•Groovy 1.7.3, GroovyServ 0.4-SNAPSHOT, MacOSX 10.6.3, MacBook Core2duo 2.53GHz, JDK1.6.0u20
•time real 10
Slide #48 DevLOVE Groovy 2011.1.24

72. for (i=0; i<1000000; i++) {};
groovy(Client VM) 593.7
groovy(Server VM) 243.8
groovyclient(Client VM) 454.6
groovyclient(Server VM) 197.0
•Groovy 1.7.3, GroovyServ 0.4, Windows XP SP3(cygwin 1.7.5),Core2duo 2.00GHz, JDK1.6.0u13
Slide #49 DevLOVE
•time Groovy 2011.1.24
real

73. Groovy
for (i=0; i<1000000; i++) {};
scalac 6.6 1.0
fsc 1.2 5.5
scalac/GroovyServ 1.1 6.6
fsc/GroovyServ 0.4 16.5
Slide #50 DevLOVE Groovy 2011.1.24

74. Slide #51 DevLOVE Groovy 2011.1.24

75. Slide #52 DevLOVE Groovy 2011.1.24

76. new!
thanks for the great work on groovyserv!
I use it everyday and enjoy its performance.
I also give it lots of credit in my workshops and talks.
(you may have recognized the additional
hackergarten screencast.)
I was thinking about maybe
making GroovyServ the
default way of how groovy
executes a script.
That sounds like a great release to me!
Congratulations to the team!
Great work, this thing really helps.
Slide #53 DevLOVE Groovy 2011.1.24

77. new!
thanks for the great work on groovyserv!
I use it everyday and enjoy its performance.
I also give it lots of credit in my workshops and talks.
(you may have recognized the additional
hackergarten screencast.)
I was thinking about maybe
making GroovyServ the
default way of how groovy
executes a script.
That sounds like a great release to me!
Congratulations to the team!
Great work, this thing really helps.
Slide #53 DevLOVE Groovy 2011.1.24

78. Slide #54 DevLOVE Groovy 2011.1.24

79. Slide #55 DevLOVE Groovy 2011.1.24

80. Slide # 56 DevLOVE Groovy 2011.1.24

81. GEP ‥ Groovy Enhancement Proposal
Slide #57 DevLOVE Groovy 2011.1.24

82. 100
1 2 3 { ->
}
1 100 . ( )
1 100 . ( )
{ ->
+ " 6 "
}
" "
http://d.hatena.ne.jp/uehaj/20100919/1284906117
10.0 18 6
2 24 6
6
[6, 12, 18, 24, 30, 36, 42, 48, 54, 60, 66, 72, :
78, 84, 90, 96]
6 6 96 6
12 6
Slide #58 DevLOVE Groovy 2011.1.24

83. (100). ( ). ( )
(1). (2). (3). ( ). ( ({ ->
( ). ( )
}))
(1). (100). (( . ( ))). ( )
(1). (100). ( . ( )). (
({ ->
( + " 6 "). ( )
}))
(" "). ( )
Slide #59 DevLOVE Groovy 2011.1.24

84. new
int fib (int n) {
groovyc
if (n<=1) return 1
return fib(n-1) + fib(n-2) jad
}
Slide #60 DevLOVE Groovy 2011.1.24

85. new
int fib (int n) {
groovyc
if (n<=1) return 1
return fib(n-1) + fib(n-2) jad
}
public int fib(int n)
{
CallSite acallsite[] = $getCallSiteArray();
if(ScriptBytecodeAdapter.compareLessThanEqual
(DefaultTypeTransformation.box(n), $const$0))
return DefaultTypeTransformation.intUnbox((Integer)
ScriptBytecodeAdapter.castToType($const$0, $get$$class$java$lang$Integer()));
else
return DefaultTypeTransformation.intUnbox((Integer)
ScriptBytecodeAdapter.castToType(acallsite[0].call(acallsite[1].callCurrent
(this, acallsite[2].call(DefaultTypeTransformation.box(n), $const$0)),
acallsite[3].callCurrent(this, acallsite[4].call
(DefaultTypeTransformation.box(n), $const$1))), $get$$class$java$lang$Integer
()));
}
Slide #60 DevLOVE Groovy 2011.1.24

86. new
int fib (int n) {
groovyc
if (n<=1) return 1
return fib(n-1) + fib(n-2) jad
}
public int fib(int n)
public int fib(int n) {
{ CallSite acallsite[] = $getCallSiteArray();
CallSite acallsite[] = $getCallSiteArray();
if(!ScriptBytecodeAdapter.isOrigInt())
if(ScriptBytecodeAdapter.compareLessThanEqual((Integer)
if(ScriptBytecodeAdapter.compareLessThanEqual
DefaultTypeTransformation.box(n), (Integer)
(DefaultTypeTransformation.box(n), $const$0))
DefaultTypeTransformation.box(1)))
return DefaultTypeTransformation.intUnbox((Integer)
return 1;
ScriptBytecodeAdapter.castToType($const$0, $get$$class$java$lang$Integer()));
else
else return DefaultTypeTransformation.intUnbox(acallsite
return DefaultTypeTransformation.intUnbox((Integer)
[0].call(acallsite[1].callCurrent(this, acallsite[2].call
ScriptBytecodeAdapter.castToType(acallsite[0].call(acallsite[1].callCurrent
((Integer)DefaultTypeTransformation.box(n), (Integer)
DefaultTypeTransformation.box(1))), acallsite[3].callCurrent
(this, acallsite[2].call(DefaultTypeTransformation.box(n), $const$0)),
(this, acallsite[4].call((Integer)DefaultTypeTransformation.box
acallsite[3].callCurrent(this, acallsite[4].call
(n), (Integer)DefaultTypeTransformation.box(2)))));
(DefaultTypeTransformation.box(n), $const$1))), $get$$class$java$lang$Integer
if(n <= 1)
()));
return 1;
} else
return fib(n - 1) + fib(n - 2);
}
Slide #60 DevLOVE Groovy 2011.1.24

87. new
int fib (int n) {
groovyc
if (n<=1) return 1
return fib(n-1) + fib(n-2) jad
}
public int fib(int n)
public int fib(int n) {
{ CallSite acallsite[] = $getCallSiteArray();
CallSite acallsite[] = $getCallSiteArray();
if(!ScriptBytecodeAdapter.isOrigInt())
if(ScriptBytecodeAdapter.compareLessThanEqual((Integer)
if(ScriptBytecodeAdapter.compareLessThanEqual
DefaultTypeTransformation.box(n), (Integer)
(DefaultTypeTransformation.box(n), $const$0))
DefaultTypeTransformation.box(1)))
return DefaultTypeTransformation.intUnbox((Integer)
return 1;
ScriptBytecodeAdapter.castToType($const$0, $get$$class$java$lang$Integer()));
else
else return DefaultTypeTransformation.intUnbox(acallsite
return DefaultTypeTransformation.intUnbox((Integer)
[0].call(acallsite[1].callCurrent(this, acallsite[2].call
ScriptBytecodeAdapter.castToType(acallsite[0].call(acallsite[1].callCurrent
((Integer)DefaultTypeTransformation.box(n), (Integer)
DefaultTypeTransformation.box(1))), acallsite[3].callCurrent
(this, acallsite[2].call(DefaultTypeTransformation.box(n), $const$0)),
(this, acallsite[4].call((Integer)DefaultTypeTransformation.box
acallsite[3].callCurrent(this, acallsite[4].call
(n), (Integer)DefaultTypeTransformation.box(2)))));
(DefaultTypeTransformation.box(n), $const$1))), $get$$class$java$lang$Integer
if(n <= 1)
()));
return 1;
} else
return fib(n - 1) + fib(n - 2);
}
Slide #60 DevLOVE Groovy 2011.1.24

88. new
int fib (int n) {
groovyc
if (n<=1) return 1
return fib(n-1) + fib(n-2) jad
}
public int fib(int n)
public int fib(int n) {
{ CallSite acallsite[] = $getCallSiteArray();
if(n <= 1)
CallSite acallsite[] = $getCallSiteArray();
if(!ScriptBytecodeAdapter.isOrigInt())
if(ScriptBytecodeAdapter.compareLessThanEqual((Integer)
return 1;
if(ScriptBytecodeAdapter.compareLessThanEqual
DefaultTypeTransformation.box(n), (Integer)
(DefaultTypeTransformation.box(n), $const$0))
else
DefaultTypeTransformation.box(1)))
return DefaultTypeTransformation.intUnbox((Integer)
return 1;
else fib(n - 1) + fib(n - 2);
return
ScriptBytecodeAdapter.castToType($const$0, $get$$class$java$lang$Integer()));
else return DefaultTypeTransformation.intUnbox(acallsite
return DefaultTypeTransformation.intUnbox((Integer)
[0].call(acallsite[1].callCurrent(this, acallsite[2].call
ScriptBytecodeAdapter.castToType(acallsite[0].call(acallsite[1].callCurrent
((Integer)DefaultTypeTransformation.box(n), (Integer)
DefaultTypeTransformation.box(1))), acallsite[3].callCurrent
(this, acallsite[2].call(DefaultTypeTransformation.box(n), $const$0)),
(this, acallsite[4].call((Integer)DefaultTypeTransformation.box
acallsite[3].callCurrent(this, acallsite[4].call
(n), (Integer)DefaultTypeTransformation.box(2)))));
(DefaultTypeTransformation.box(n), $const$1))), $get$$class$java$lang$Integer
if(n <= 1)
()));
return 1;
} else
return fib(n - 1) + fib(n - 2);
}
Slide #60 DevLOVE Groovy 2011.1.24

89. new
long begin = System.nanoTime();
FibJava foo = new FibJava();
int result = foo.fib(32); //
long end = System.nanoTime();
System.out.println("Elapsed time: " + (end - begin) + "ns");
(ns) Java 1
Groovy 1.7.5 1,639,852,000 66.46
Groovy 1.8.0 beta 3 65,497,000 2.65
Java(OpenJDK 1.7) 24,672,000 1.0
• MacOSX 10.6.3, MacBook Core2duo 2.53GHz,openjdk version "1.7.0-internal"
Slide #61 DevLOVE Groovy 2011.1.24

90. @Invariant({ elements != null })
class Stack { def boolean is_empty() {
elements.isEmpty()
private List elements }
@Ensures({ is_empty() }) @Requires({ !is_empty() })
public Stack() { def last_item() {
elements = [] elements.last()
} }
@Requires({ preElements?.size() > def count() {
0 }) elements.size()
@Ensures({ !is_empty() }) }
public Stack(List preElements) {
elements = preElements
}
http://github.com/andresteingress/gcontracts/wiki
Slide #62 DevLOVE Groovy 2011.1.24

91. update
http://canoo.com/blog/2010/09/20/log-groovys-new-and-extensible-logging-conveniences/
Slide #63 DevLOVE Groovy 2011.1.24

92. import groovy.util.logging.Log
@Log
class MyClass {
def invoke() {
log.info('... an info message')
log.fine('... a fine message')
}
}
http://canoo.com/blog/2010/09/20/log-groovys-new-and-extensible-logging-conveniences/
Slide #64 DevLOVE Groovy 2011.1.24

93. New!
Slide #65 DevLOVE Groovy 2011.1.24

94. http://kokucheese.com/event/index/5267/
Groovy&Grails exchange 2010@London by
tyama, tamada ( )
Gradle G* by (LITERAL-ICE)
Slide #66 DevLOVE Groovy 2011.1.24

95. http://kokucheese.com/event/index/5267/
Groovy&Grails exchange 2010@London by
tyama, tamada ( )
Gradle G* by (LITERAL-ICE)
Slide #66 DevLOVE Groovy 2011.1.24

96. Slide # 67 DevLOVE Groovy 2011.1.24