日本 Grails/Groovy ユーザーグループ名古屋支部 第２回勉強会

1. T.Yamamoto 2009/07/24 @Nagoya
def speaker = new Cast(name:”T.Yamamoto”,version:”GN-2009-07-24”)

2. ( )
Web
90%Grails
JGGUG( )
Grails 9-11
Grails Acegi Plugin
http://d.hatena.ne.jp/mottsnite/

6. def name='World' def list = ["Hello", " ", "World"]
println "Hello $name!" list.each{
print it
}
class Greet {
def name
Greet(who) { name = who[0].toUpperCase() +who[1..-1] }
def salute() { println "Hello $name!" }
}
def g = new Greet('world')
// create object
g.salute()

8. import java.util.Date; } return this.black;
public Integer getColorId() { }
public class Color { return this.colorId; public void setBlack(String black) {
private Integer colorId; } this.black = black;
private String colorName; public void setColorId(Integer colorId) { }
private String cyan; this.colorId = colorId; public String getRgb() {
private String magenta; } return this.rgb;
private String yellow; public String getColorName() { }
private String black; return this.colorName; public void setRgb(String rgb) {
private String rgb; } this.rgb = rgb;
private String sysIpaddress; public void setColorName(String }
private Date sysLastmodified; colorName) { public String getSysIpaddress() {
private Integer sysUid; this.colorName = colorName; return this.sysIpaddress;
public Color(Integer colorId, String } }
colorName, String cyan, public String getCyan() { public void setSysIpaddress(String
String magenta, String yellow, String return this.cyan; sysIpaddress) {
black, String rgb, } this.sysIpaddress = sysIpaddress;
String sysIpaddress, Date public void setCyan(String cyan) { }
sysLastmodified, Integer sysUid) { this.cyan = cyan; public Date getSysLastmodified() {
this.colorId = colorId; } return this.sysLastmodified;
this.colorName = colorName; public String getMagenta() { }
this.cyan = cyan; return this.magenta; public void setSysLastmodified(Date
this.magenta = magenta; } sysLastmodified) {
this.yellow = yellow; public void setMagenta(String magenta) { this.sysLastmodified = sysLastmodified;
this.black = black; this.magenta = magenta; }
this.rgb = rgb; } public Integer getSysUid() {
this.sysIpaddress = sysIpaddress; public String getYellow() { return this.sysUid;
this.sysLastmodified = sysLastmodified; return this.yellow; }
this.sysUid = sysUid; } public void setSysUid(Integer sysUid) {
} public void setYellow(String yellow) { this.sysUid = sysUid;
public Color() {} this.yellow = yellow; }
public Color(Integer colorId) { } }
this.colorId = colorId; public String getBlack() {

9. class Color {
Integer colorId
String colorName
String cyan,magenta,yellow,black,rgb
String sysIpaddress
Date sysLastmodified
Integer sysUid
}
class Color {
Integer colorId, sysUid
String colorName,cyan,magenta,yellow,black,rgb,sysIpaddress
Date sysLastmodified
}

11. String name = 'World'
↓
def name='World'
class Dog {
def say(){ // ←
“Garuuuuu”
}
}

14. GString
""" ${str.size()}
$str
"""

15. //
def someMethod(num,clo){ clo(num) } { println it } 0 1
{ -> println 300 } 0
// { a -> println a } 1
def clo = { println " "+it }
{ a=2 -> println a }
def clo2 = {one,two=" "-> { a,b -> println a+b }
println " ${one} ${two}" { int a -> println a }
}
clo 1 //
clo2 2,1 //
//
someMethod(1,clo)
someMethod(2,clo2)

16. def pattern = "d{3}-d{4}" //
def text = "633-0412" //
println text ==~ pattern // "true"
def m = text =~ pattern
println m.matches() // "true"
p = ~/d{3}-d{4}/
m = p.matcher(text)
println m.matches() // "true"

18. [1,2,3] + [1] == [1,2,3,1]
[1,2,3] << 1 == [1,2,3,1]
def list = [0,1,2]
[1,2,3,1] - [1] == [2,3]
list[-1] == 2
assert list[-1..0] == list.reverse()
[1,[2,3]].flatten() == [1,2,3]
assert list == [list.head()] + list.tail()
[1,2,3].reverse() == [3,2,1]
//
[1,2,3].collect{ it+3 } == [4,5,6]
[1,2,3,1].unique() == [1,2,3] list.each{println it}
[4,2,1,3].findAll{it%2 == 0} == [4,2]
[1,2,3,4].sum() == 10
[4,2,1,3].sort() == [1,2,3,4]
// ....

19. def map = [:]// map.each { entry ->
println entry.key
map.name=" "
println entry.value
map['age']=20 }
map.each { k, v ->
println map['name'] println "$k $v"
println map.age }
for (entry in map) {
println "$entry.key $entry.value"
}

20. assert (0..10).contains(5)
assert (0.0..10.0).containsWithinBounds(3.5)
for (item in 0..10) { println item }
for (item in 10..0) { println item }
(0..<10).each { println it }

21. def file = new File('data.csv') //
//
file.eachLine { line ->
file.withWriter('UTF-8'){ writer -> println line
writer << ''' , }
,90
,78 //
,75 file.splitEachLine(',') {list ->
,65 println list[0]
''' }
}
//
println file.text

24. <html>
<head>
import groovy.xml.* <title>Page title</title>
def page = new MarkupBuilder() </head>
page.html{ <body>
head {title 'Page title'} <div>
body { <li>No.1</li>
div { <li>No.2</li>
(1..5).each{n-> <li>No.3</li>
li "No.$n" <li>No.4</li>
} <li>No.5</li>
} </div>
} </body>
} </html>

25. class IntCodec {
static String encode(Integer self){self.toString()}
static Integer decode(String self){self.toInteger()}
}
use(IntCodec){
244.encode()
"244".decode()
}
Integer.metaClass.encode << {delegate.toString()}
String.metaClass.decode << {delegate.toInteger()}
244.encode().decode()

26. //
Integer.metaClass.methodMissing << {
String name, Object args ->
Math."$name"(delegate)
}
println 3.sin()
println 3.cos()

29. Gaelyk

31. Grails/Groovy
http://www.jggug.org/