Upcoming SlideShare
×

# 20090622 Bp Study#22

1,620
-1

Published on

0 Likes
Statistics
Notes
• Full Name
Comment goes here.

Are you sure you want to Yes No
Your message goes here
• Be the first to comment

• Be the first to like this

Views
Total Views
1,620
On Slideshare
0
From Embeds
0
Number of Embeds
1
Actions
Shares
0
22
0
Likes
0
Embeds 0
No embeds

No notes for slide

### 20090622 Bp Study#22

1. 1. 2009 6 28
2. 2. • • • • 2009 6 28
3. 3. • • • • • • 2009 6 28
4. 4. 2009 6 28
5. 5. 2009 6 28
6. 6. 2009 6 28
7. 7. 2009 6 28
8. 8. 2009 6 28
9. 9. 2009 6 28
10. 10. 2009 6 28
11. 11. 2009 6 28
12. 12. 2009 6 28
13. 13. 2009 6 28
14. 14. 2009 6 28
15. 15. • • • • • 2009 • 6 28
16. 16. 2009 6 28
17. 17. 2009 6 28
18. 18. • • • • 2009 6 28
19. 19. • 2009 6 28
20. 20. 2009 6 28
21. 21. 2009 6 28
22. 22. • • • • • 2009 6 28
23. 23. • • • • • 2009 6 28
24. 24. 2009 6 28
25. 25. 2009 6 28
26. 26. scala> val list:List[Int] = List(1,2,3,4) list: List[Int] = List(1, 2, 3, 4) scala> val list = List(1,2,3,4) list: List[Int] = List(1, 2, 3, 4) 2009 6 28
27. 27. scala> def isEven(i:Int):Boolean = {              return ( i % 2 == 0 )             }                             isEven: (Int)Boolean scala> def isEven(i:Int) = i % 2 == 0 isEven: (Int)Boolean scala> val func = isEven _ func: (Int) => Boolean = <function> 2009 6 28
28. 28. scala> def add(n:Int)(m:Int)=n+m add: (n: Int)(m: Int)Int scala> val add3 = add( 3 ) _ add3: (Int) => Int = <function> scala> def curryingAdd( n:Int ) = add( n ) _ curryingAdd: (Int)(Int) => Int 2009 6 28
29. 29. scala> l.map( {(n:Int) => n * 2} ) res1: List[Int] = List(2, 4, 6, 8) scala> list.filter( _ % 2 == 0 ) res2: List[Int] = List(2, 4) scala> list.filter( func )       res3: List[Int] = List(2, 4) 2009 6 28
30. 30. def test[T](list:List[T]) = list match {         case 1::xs => print("start 1")                 case 2::xs => print("start 2")                 case "Test"::xs => print("start Test")         case x::Nil => print("one elemnt")             case x::xs => print("start " + x )             case _ => print("default")              }   2009 6 28
31. 31. scala> class Foo( val n:Int, val s:String ){              def bar = print( n + s )        } defined class Foo scala> object FooObj{             val n = 3          val s = "Bar"          def bar = print( n + s )        } defined module FooObj 2009 6 28
32. 32. 2009 6 28
33. 33. 2009 6 28
34. 34. 2009 6 28
35. 35. 2009 6 28
36. 36. 2009 6 28
37. 37. • • • 2009 6 28
38. 38. • • • • 2009 6 28
39. 39. • 2009 6 28
40. 40. • • 2009 6 28
41. 41. • • • 2009 6 28
42. 42. • • • • 2009 6 28
43. 43. 2009 6 28
44. 44. 2009 6 28
45. 45. 2009 6 28
46. 46. 2009 6 28
47. 47. 2009 6 28
48. 48. • • • • 2009 6 28
49. 49. 2009 6 28
50. 50. • <p><lift:helloWorld.howdy /></p> class HelloWorld {   def howdy = <span>Welcome to helloworld at  {new _root_.java.util.Date}</span> } 2009 6 28
51. 51. • 2009 6 28
52. 52. • 2009 6 28
53. 53. • • 2009 6 28
54. 54. • <lift:SampleSnipet.add form="POST">     <entry:description />      <entry:amount /> <br />     <entry:submit /> </lift: SampleSnipet.add > 2009 6 28
55. 55. • class SampleSnipet     def add (xhtml : NodeSeq) : NodeSeq = {         var desc = ""         var amount = "0"         def processEntryAdd () { ... }         bind("entry", xhtml,             "description" -> SHtml.text(desc, desc = _),             "amount" -> SHtml.text(amount, amount = _),             "submit" -> SHtml.submit(Add,                    processEntryAdd))     } } 2009 6 28
56. 56. 2009 6 28
57. 57. • • • • • • 2009 6 28
58. 58. • ‣ ‣ ‣ • ‣ ‣ ‣ 2009 6 28
59. 59. 2009 6 28
60. 60. • class Expense extends LongKeyedMapper[Expense] with IdPK {    def getSingleton = Expense    object dateOf extends MappedDateTime(this)    object description extends MappedString(this,100)    object amount extends MappedDecimal(this,          MathContext.DECIMAL64, 2)    object account extends        MappedLongForeignKey(this, Account) } 2009 6 28
61. 61. • object Expense extends Expense with  LongKeyedMetaMapper[Expense] { override def fieldOrder =       List(dateOf, description, amount) } 2009 6 28
62. 62. • val myEntries1 = Expense.findAll   val myEntries2 = Expense.findAll(By_>(Expense.amout,5) )  val recentEntries = Expense.findAll(   BySql("dateOf > (CURRENT_DATE - interval ’30 days’)",   IHaveValidatedThisSQL("dchenbecker","2008-12-03")) 2009 6 28
63. 63. • var myEntr= Expense.create myEntry.dateOf(new Date).description("A sample entry") myEntry.amount(BigDecimal("127.20")) myEntry.save myEntry.delete 2009 6 28
64. 64. 2009 6 28
65. 65. • • • • 2009 6 28
66. 66. • • • • 2009 6 28
67. 67. • • • 2009 6 28
68. 68. 2009 6 28
69. 69. • • • • 2009 6 28
70. 70. • • • 2009 6 28
71. 71. 2009 6 28
72. 72. 2009 6 28
1. #### ¿Le ha llamado la atención una diapositiva en particular?

Recortar diapositivas es una manera útil de recopilar información importante para consultarla más tarde.