NAME

SPVM::Comparator::Int - Comparator::Int in SPVM | a callback interface for int comparation

SYNOPSYS

use Comparator::Int;

my $comparator : Comparator::Int = method : int ($a : int, $b : int); {
  return $a <=> $b;
};

my $result = $comparator->(3, 5);

DESCRIPTION

Comparator::Int is a callback interface to compare two int values.

CALLBACK METHOD INTERFACE

method : int ($a : int, $b : int);

This method must receive two numbers and return 1 if $a is more than $b, -1 if $x is less than $b, 0 if $a equals $b in the implementation.

This method is planned to be implemented in other classes.