#!/usr/bin/env perl
# Copyright (c) 2015 Christian Jaeger, copying@christianjaeger.ch
# This is free software. See the file COPYING.md that came bundled
# with this file.
# This file checks whether passing global functions as *foo instead of
# \&foo incurs (much) overhead.
use strict;
use warnings;
use warnings FATAL => 'uninitialized';
# Find modules from the functional-perl working directory (not
# installed)
use Cwd 'abs_path';
our ($mydir, $myname);
BEGIN {
    my $location = (-l $0) ? abs_path($0) : $0;
    $location =~ /(.*?)([^\/]+?)_?\z/s or die "?";
    ($mydir, $myname) = ($1, $2);
}
use lib "$mydir/../lib";
# for development/debugging
#use Chj::ruse; # get the 'ruse' procedure which will reload modules;
# since we're putting the meat of the program into the
# main file, this won't help us here.
use Chj::Backtrace;    # show backtraces when an error happens
use FP::Repl;          # get the 'repl' procedure.
use Chj::TEST;
# ------------------------------------------------------------------
use Chj::time_this;
use FP::Div "inc";
our $n = 1500000;
sub t {
    my ($f) = @_;
    my $z = 0;
    for (1 .. $n) {
        $z = &$f($z)
    }
    $z
}
sub tim {
    time_this { t *inc } " *";
    time_this { t \&inc } "\\&";
}
tim for 1 .. 3;
#perhaps_run_tests "main" or repl;