#!/usr/bin/perl

# [[[ PREPROCESSOR ]]]
# <<< PARSE_ERROR: 'ERROR ECOPAPL02' >>>
# <<< PARSE_ERROR: 'Global symbol "$pi_over_2" requires explicit package name' >>>

# [[[ HEADER ]]]
use RPerl;
use strict;
use warnings;
our $VERSION = 0.001_000;

# [[[ CONSTANTS ]]]
## no critic qw(ProhibitUselessNoCritic ProhibitMagicNumbers RequireCheckedSyscalls)  # USER DEFAULT 1: allow numeric values & print operator
## no critic qw(ProhibitConstantPragma ProhibitMagicNumbers)  # USER DEFAULT 3: allow constants
use constant PI  => my number $TYPED_PI  = 3.141_59;
use constant PIE => my string $TYPED_PIE = 'pecan';

# [[[ OPERATIONS ]]]
my number $pi_over_2 = PI() / 2
print 'pi / 2 = ', $pi_over_2, "\n";