NAME

SPVM::Comparator::String - A Callback Type for string Comparation

SYNOPSYS

use Comparator::String;

my $comparator : Comparator::String = method : int ($a : string, $b : string); {
  return $a cmp $b;
};

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

DESCRIPTION

Comparator::String is an interface type for the callback to compare two strings.

INTERFACE METHOD

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

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