ruby 條件例子

shijiang1130

1. $hours_asleep = 0
   
2. 
   
3. def tired
   
4.         if $hours_asleep >= 8 then
   
5.                 $hours_asleep = 0
   
6.                 return false
   
7.         else
   
8.                 $hours_asleep += 1
   
9.                 return true
   
10.         end
    
11. end
    
12. 
    
13. def snore
    
14.         puts('snore...')
    
15. end
    
16. 
    
17. def sleep
    
18.         puts("z" * $hours_asleep)
    
19. end
    
20. 
    
21. while tired do sleep end
    
22. 
    
23.         while tired
    
24.                 sleep
    
25.         end
    
26. 
    
27.         sleep while tired
    
28. 
    
29.         begin
    
30.                 sleep
    
31.                 snore
    
32.         end while tired
    
33.        

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shijiang1130

1. # The Book of Ruby - httpthen//www.sapphiresteel.com
   
2. 
   
3. def showDay( i )
   
4.         case( i )
   
5.                 when 1 then puts("It's Monday" )
   
6.                 when 2 then puts("It's Tuesday" )
   
7.                 when 3 then puts("It's Wednesday" )
   
8.                 when 4 then puts("It's Thursday" )
   
9.                 when 5 then puts("It's Friday" )
   
10.                 when (6..7) then puts( "Yippee! It's the weekend! " )
    
11.                 else puts( "That's not a real day!" )
    
12.         end
    
13. end
    
14. 
    
15. 
    
16. for i in 1..8 do
    
17.         showDay( i )
    
18. end

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shijiang1130

注意case之后的then,ruby1.8可以寫成:,新版不能再這樣用了，也可以用新行來替代。

rubyish

感謝大牛 {:3_188:}

bikong0411

不錯lollol

pitonas

只允許用新行, then,  ; 號了