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no warnings 'uninitialized';
if (!!(my $num = $recFono->field_as_text('102') +
    !!(my $type = $recFono->field_as_text('104')) {
    something();
}

my $num = $recFono->field_as_text('102');
my $type = $recFono->field_as_text('104');
if ($num || $type) {
    something();
}