|
|||||||||
|
|||||||||
| |||||||||
|
|||||||||
|
|||||||||
| |||||||||
|
|
|
| |||||||||
 |
|
|
«
Previous Thread
|
Next Thread
»
|
Thread Tools | Search this Thread | Rate Thread | Display Modes |
Dev Shed Forums Sponsor:
|
|
|
|
#1
July 19th, 2008, 04:23 PM
|
|||
|
|||
|
Array assignment problem
Hi guys,
Code:
@theArray = [] @theArray[0]= 155 @theArray[1]= 55 @theArray2 = [] for i in (0..2) @theArray2[i] = @theArray[i].to_s(16) end doesnt work ? ArgumentError: wrong number of arguments (1 for 0) from (irb):75:in `to_s' from (irb):75 from (irb):74:in `each' from (irb):74 from ^C:0 I want to be converting the elements of theArray to hex and copy them to the new theArray2. And do this in one step. Does anyone know how to fix this ?
|
|
#2
July 19th, 2008, 06:01 PM
|
||||
|
||||
|
you are using an array with 2 items, placed at index 0 and 1.
in your loop you have (0..2) which will access item at index 0, 1 and 2, with index 2 no existing. what you want to use is (0...2) (with an extra dot, which means the vale 2 is not being used) or (0..1).
|
|
#3
July 19th, 2008, 06:41 PM
|
|||
|
|||
|
thanks for the quick reply.
|
|
#4
July 19th, 2008, 09:57 PM
|
|||
|
|||
|
To avoid such worries, ruby moves pretty heavily to the iterator philosophy. Arrays support iterators like each
Code:
irb(main):005:0> a = [1,4,2,7,6]
=> [1, 4, 2, 7, 6]
irb(main):006:0> a.each { |x| puts x }
1
4
2
7
6
=> [1, 4, 2, 7, 6]
Now you dont need to worry about whether or not to add the extra '.' or not. Just food for thought.
__________________
-- I'll provide you with reference points; if they dont work, refer to something else. If you process text, this might make your life a little easier.
|
|
| Viewing: Dev Shed Forums > Programming Languages > Ruby Programming > Array assignment problem |
| Thread Tools | Search this Thread |
| Display Modes | Rate This Thread |
|
|
 |
|
|
Del.icio.us
Digg
Google
Spurl
Blink
Furl
Simpy
Y! MyWeb
Linear Mode
