Re: Match Numeric Range

What is in $range? If it’s a single integer, then your test will be:

if ($range >= 300 && $range <= 400)
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But if $range contains a string such as 310-395, you have two options:

Break the string apart either by using a regex or by splitting on /-/:

my ($min, $max) = split /-/, $range;

if ($min >= 300 && $min <= 400 && $max >= 300 && $max <= 400)
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Look at using a module such as Set::IntSpan (on which see my meditation Recamán's sequence and memory usage).

Hope that helps,

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Re^2: Match Numeric Range by Monk::Thomas (Friar) on Aug 18, 2015 at 21:35 UTC
@OP You could also write the conditional as `if ($range >= 300 and $range <= 400)` [download] In this case it actually does not make a difference which one you use, but `open my $fh, '<', $filename \|\| die;` [download] and `open my $fh, '<', $filename or die;` [download] are two totally different things due to different order of precedence. (A verbose explanation can be found at 'or' vs '', '&&' vs 'and'.)	[reply] [d/l] [select]
Re^2: Match Numeric Range by PilotinControl (Pilgrim) on Aug 18, 2015 at 11:56 UTC
Hello Athanasius! Thanks for the reply and the write up. There is no delimitor such as "-", ":", "," and so on it is white space..and the photo resistor sends the following to the serial monitor: Light - 235, 226, 212, 256, 280 every one second and this is an ever changing number and like wise if it is Dark - 345, 332, 389, 367 every one second when the photo resistor is covered. So that is why I need to capture a range of numbers for light and dark so the lights will either be turned on or turned off....and it is always 3 digits in length.	[reply]