in reply to Re^3: eval "require $class" seems wrong (::)
in thread eval "require $class" seems wrong

Okay, well, so in the general case (including '::' in module names), the non-string-eval way to do it seems to be:
# turn $class name into $path my $class = 'Some::Class'; my $path = $class; $path =~ s/::/\//g; $path .= '.pm'; # check if $path already loaded if ( not exists $INC{$path} ) { # do block eval on $path eval { require $path }; die "Can't load $class: $@" if $@; } # if we make it here, we can use $class my $obj = $class->new;