On 2011-11-29 14:49, Chris Stinemetz wrote:
How can I check that the value assigned to $cell and $sector is numeric
before I try to call the sprintf function?
I am just trying to clear this warning.
Argument "" isn't numeric in sprintf at ./rt_evdo_pcmd.pl line 139,<$FIN>
line 119503.
line 139 is from my program is below:
my $c_s = sprintf("%d_%d",$cell,$sector);
To check if a variable is numeric, see Igor's suggestion to apply
looks_like_number.
About sprintf:
I almost always use %s, and only use the %d and %i ones for special
formatting, like %04d.
So either go with John's suggestion, or make it
my $c_s = sprintf q{%s_%s}, $cell, $sector;
--
Ruud
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