Re^2: What is the * postfix operator, pre-'feature postderef'?

Gaaak I feel STUPID! Of course you are correct. The lack of spaces threw off my disused spatial recognition skills. And I just got new glasses, sheesh .... But it also threw me off that multiplying a string containing spaces by 1 results in the first "field" of the string, the same as 's/\s.*//'. One really ought to use:

$uptime=`cat /proc/uptime`;
print ref(\$uptime)," $uptime\n";
$uptime =~ s/\s.*//;
print ref(\$uptime)," $uptime\n";
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Re^3: What is the * postfix operator, pre-'feature postderef'? by GrandFather (Saint) on Sep 10, 2014 at 21:28 UTC
If you want the first numeric field I'd use: `($uptime) = $uptime =~ /(\d+)/;` [download] which makes the intent much clearer. What's with the `ref(\$uptime)`? Perl is the programming world's equivalent of English	[reply] [d/l] [select]