NAME

SPVM::EqualityChecker - EqualityChecker in SPVM | a callback interface to check the object equality

SYNOPSYS

use EqualityChecker;

my $equality_checker : EqualityChecker = method : int ($object1 : object, $object2 : object) {
  my $point1 = (Point)$object1;
  my $point2 = (Point)$object2;
  
  if ($point1->x == $point2->x && $point1->y == $point2->y) {
    return 1;
  }
  else {
    return 0;
  }
};

my $point1 = Point->new(1, 2);
my $point2 = Point->new(5, 6);

my $is_equal = $equality_checker->($point1, $point2);

DESCRIPTION

EqualityChecker is a callback interface to check the object equality.

CALLBACK METHOD INTERFACE

method : int ($object1 : object, $object2 : object)

If the two objects are equals, return 1, otherwise return 0.

This method is planned to be implemented in other classes.