What is Array?
During execution, we can have a few variables which we need. So we can take these variables in the form of array in tcl.
set array(index) value ;
The way we set variables, in the same way we set an array. The only difference is that it comes with a pattern of variables.
set numbers (0) 10 ;
set numbers (1) 20;
puts $numbers (0)
puts $numbers (1)
Result : 10
20
Size of Array
[array size variable_name]
set numbers (0) 10 ;
set numbers (1) 20;
[array size numbers]
Results : 2
We can have conditional statements and loops in array.
set numbers (0) 10;
set numbers (1) 20;
for {set index 0} {$index < [array size numbers]} {incr index} {
puts “numbers($index) : $numbers ($index)”
}
Result: number (0) : 10
number (1) : 20
Similar to ‘for’ loop, we can use foreach loop as well.
set numbers (0) 10;
set numbers (1) 20;
foreach index [array names numbers] {
puts “numbers($index) : $numbers ($index)”
}
Result: number (0) : 10
number (1) : 20
