NAME

            

              
              
Math::NumOnly - Disallow numeric operations that don't involve an IV or NV
            
          

DESCRIPTION

            

              
              
This disallowance of numeric operations applies only to operations that
involve one (or more) Math::NumOnly objects.
Arithmetic in which none of the operands are Math::NumOnly objects will still
proceed as per the normal rules.
It's unclear to me whether an operation between a Math::NumOnly object and some
other object (eg Math::BigInt, Math::GMP, Math::MPFR) should be allowed.
As it currently stands, such operations are not permitted.
It's just a silly, fun diversion - probably of little (if any) value.
            
          

SYNOPSIS

            

              
              
use Math::NumOnly;
# my $a = Math::NumOnly->new('123.5') # Fatal error - given arg is a string.
my $a = Math::NumOnly->new(123.5); # $a holds value of 123.5
my $b = $a + 42; # $b holds value of 165.5
# $b += '34.5';  # Fatal error - '34.5' is a string
$b += 34.5;      # $b holds value of 200
print $b, "\n";  # prints 200
$pv = '3';
$iv = $pv + 7; # $iv is an IV, value 10.
$c = Math::NumOnly($iv); # $c holds value of 10
#$c += $pv;  # Fatal error - $pv is still recognized as a string.
            
          

FUNCTIONS

            

              
              
my $ok = is_ok($arg); # used internally.
  This function is not exported but can be accessed as Math::NumOnly($arg).
  It returns true if $arg is allowed to be used in an arithmetic
  operation with a Math::NumOnly object.
  Else it returns false.
No other functions are provided, except for the subs that are responsible
for overloading the  '+', '-', '*', '/', '**', '++', '--', '>=', '<=',
'==', '!=', '>', '<', '<=>', '""', '+=', '-=', '*=', '/=', '**=' and
perhaps other operations.
            
          

LICENSE

            

              
              
This program is free software; you may redistribute it and/or
modify it under the same terms as Perl itself.
Copyright 2023, Sisyphus
            
          

AUTHOR

            

              
              
Sisyphus <sisyphus at(@) cpan dot (.) org>