One way is to eval the appropriate require:

#! perl
use Modern::Perl;

my $r1 = eval "require Data::Dumper";
my $r2 = eval "require Non::Exist";

say $_ ? "found" : "missing" for ($r1, $r2);

[download]

which on my system prints:

 0:35 >perl 478_SoPW.pl
found
missing

 0:37 >

[download]

Hope that helps,

Athanasius <°(((>< contra mundum Iustus alius egestas vitae, eros Piratica,

In reply to Re: how to detect gtk installed or not by Athanasius
in thread how to detect gtk installed or not by sdetweil

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