Or just 
my $self = "Module::$t"->new();

[download]
as ysth mentions.

Note to original poster: the quotes are there to help perl understand where exactly the package name is. It is sometimes is not as obvious as here: 

my $t = 'Module::Test';
my $self = $t->new();

[download]
--kap

In reply to Re^2: object contstruction by kappa
in thread object contstruction by Anonymous Monk

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