I am running into a problem trying to print a notification periodically while a script is running so the user can visually verify that the script is actively running. I can run the following code that I found in the Q&A sections and it works as expected: 
use strict;

my $tick = "tick\n";

# loop until this process is terminated from the outside
while (1) {
  print $tick;

  # Make "tick" into "tock" and "tock" into "tick"
  $tick =~ tr/io/oi/;

  # sleep 10 seconds
  sleep( 10 );
}

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Which prints a tick or tock every 10 seconds. The following code does not function as expected, to illustrate the same problem I am having: 
use strict;

foreach (1..10) {
    print '*';
    sleep(1);
}

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This will pause for 10 seconds and then print 10 *'s instead of printing a * every second. Seems like perl is optimizing the code somehow. Any ideas?

In reply to Optimization problem? by Anonymous Monk

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