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Query w.r.t foreach

Posted by kris6 (kris6), 19 August 2006
$rows = {0 1 1 5}  {1 24 1 5 }  {2 1 1 5 }  {3 48 1 5 }  {4 1 1 4 }

My code looks like this;

foreach lrow rows{
 puts " $lrow \n"
}

This will print
0 1 1 5
1 24 1 5
2 1  1 5
3 48 1 5
4 1 1 4

My requirement is to access the next element also within the same loop,

foreach lrow rows{
 puts " $lrow \n"
 //read the next element
 puts " $lrow \n"
}

How do i read the next element?




Posted by admin (Graham Ellis), 19 August 2006
use for rather that foreach, for example:

Code:
set rowrow {{1 2 3} {4 5 6} {7 8 9} {A C J}}
for {set k 0} {$k < [expr [llength $rowrow] - 1]} {incr k} {
     puts -nonewline "this "
     puts [lindex $rowrow $k]
     puts -nonewline "next "
     set kp1 [expr $k + 1]
     puts [lindex $rowrow $kp1]
     }




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