$\="\n";
 
sub safecall{
  db(@_);
  my $obj=shift;				      # TODO check object/class
  my ($meth,$a_args);
  while (@_){
    $meth=shift;				      # TODO check method
    $a_args= (ref $_[0] eq "ARRAY" ? shift : []);     
    $obj=$obj->$meth(@$a_args);                       # TODO check returned obj
  }
  print "-"x20;
  return $obj;  
};
 
my $safecall=\&safecall;
 
my $obj={};
bless $obj, CLASS;
 
#- USAGE/INTERFACE -
$obj->$safecall( "meth1" );
$obj->$safecall( meth1=> meth2=> [3,4,5] );
$obj->$safecall( qw(meth1 meth2) );
$obj->$safecall( meth1=>[1,2,3] , meth2=> [3,4,5] );
$obj->$safecall( meth1=>[1,2,3] ) -> meth2(3,4,5);    # still possible
 
safecall($obj,  meth1=>[1,2,3] , meth2=> [3,4,5]);    # fuctional approach
 
package CLASS;
 
sub meth1 {
  my $self=shift;
  print "call meth1 with (@_)";
  return $self;
}
 
sub meth2 {
  my $self=shift;
  print "call meth2 with (@_)";
  return $self;
}