#!/usr/bin/env python
#
# find-duplicates

import types
 
def flatten_dict(to_flatten, separator='_'):

<?php
class LogoutHandler extends AFK_HandlerBase {
 

import smtpd
import asyncore
 

<?php
function php_is_so_broken() {
    // Note: This appears to have been fixed somewhere in the 5.1 series,

<?php
/*
 * Two annoying omissions from PHP are the lack of array_all() and array_any(), which check if

from itertools import count
 
def sieve():

#!/usr/bin/env python
#
# pipedarg

if (!is_well_formed_email_address($email)) {
    echo "Email address is not well-formed.\n";
} else {

function is_valid_local_part($local) {
    // I'm not entirely sure about this regex, but it seems to fit was RFC2822 specifies.
    return preg_match("@^[-a-z0-9!#\$%&'*+/=?^_`{|}~]+(\.[-a-z0-9!#\$%&'*+/=?^_`{|}~]+)*\$@", $local);

function is_well_formed_hostname($host) {
    return preg_match('~^(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)*[a-z](?:[a-z0-9-]*[a-z0-9])$~', $host);
}

function can_host_receive_mail($host) {
    if (checkdnsrr($host, 'MX')) {
        return true;

~^(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)*[a-z](?:[a-z0-9-]*[a-z0-9])$~