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foreach loop does not use array order

Posted by shubb (shubb), 11 January 2006
I'm trying to get an array sorted.  
I created an array of commands that I need to have run in the order that I specified.
I use a foreach loop, but it appears to use the elements of the array in a fixed order, but not the order I entered them in.
How can I either order the array, or have the foreach loop run the commands in order?

I've tried the lsort command but none of the options change the order that it uses.

Code:
#!/usr/bin/expect

set variables(0) 0
set variables(1) 1
set variables(2) 2
set variables(3) 3
set variables(4) 4

foreach text [array names variables] {
       puts $text
}


outputs
Code:
./test3.exp
4
0
1
2
3


Posted by admin (Graham Ellis), 11 January 2006
Try

Code:
#!/usr/bin/expect

set variables(0) 0
set variables(1) 1
set variables(2) 2
set variables(3) 3
set variables(4) 4

foreach text [lsort [array names variables]] {
puts $text
}


Perhaps you didn't use lsort quite like this?

Posted by shubb (shubb), 11 January 2006
Ah, you're right.  
I tried using the lsort as a separate command.  I though it was like php where the sort re-orders the array permanently.

Thanks!



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