"How does it compare speed-wise ..."

A very quick benchmark shows no appreciable difference. 

#!/usr/bin/env perl

use strict;
use warnings;

use Array::Contains;
use List::Util 'any';
use Benchmark 'cmpthese';

my @base = 'A' .. 'Z';
my @search = map +($_, lc), @base;

print "\@base[@base]\n";
print "\@search[@search]\n";

cmpthese 0 => {
    lua => \&lua,
    acc => \&acc,
};

sub lua {
    for my $x (@search) {
        my $bool = any { $_ eq $x } @base;
    }

    return;
}

sub acc {
    for my $x (@search) {
        my $bool = contains($x, \@base);
    }

    return;
}

[download]

The check on the arrays was the same on each run: 

@base[A B C ... X Y Z]
@search[A a B b C c ... X x Y y Z z]

[download]

Here's the results of three runs: 

       Rate lua acc
lua 15544/s  -- -1%
acc 15622/s  1%  --

       Rate acc lua
acc 15777/s  -- -1%
lua 15905/s  1%  --

       Rate acc lua
acc 15782/s  -- -0%
lua 15857/s  0%  --

[download]

— Ken

In reply to Re^4: Where does the spurious error message come from? by kcott
in thread Where does the spurious error message come from? by kikuchiyo

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