if( ! $obj->check(
  blah => 1,
  stuff => 2,
  foo => 'bar',
  ...
)){
  ...
}

my %params = (
  blah => 1,
  stuff => 2,
  foo => 'bar',
  ...
)
if( ! $obj->check(%params) ){
  ...
}

$obj->blah(1);
$obj->stuff(2);
$obj->foo('bar');
...
if( ! $obj->check() ){
  ...
}