You could have a look at
Term::ANSIScreen or
Curses, assuming that you are working with terminals. Every time you do a screen update in your code, just jump to the positions at the bottom of the screen, and print whatever.
use Term::ANSIScreen qw/:color :cursor :screen/;
...
my %vals = (
Number1 => { X => 1, Y => 20, Width => 10 },
Number2 => { X => 11, Y => 20, Width => 10 },
...
);
sub SetValue
{
my ($name, $val) = @_;
locate $vals{$name}{X}, $vals{$name}{Y};
print $val, ' ' x $vals{$name}{Width} - length($val);
# or
# printf "%-$vals{$name}{Width}s", $val;
}
...
for (0..10) {
SetValue(Number1, 100 + $_);
SetValue(Number2, 200 + $_);
sleep(1);
}
...
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