h2rd

<?php
class Generator {
	private $start = '1';
	
	function __construct($start = null) {
		if ($start != null) {
			$this->start = (string) $start;
		}
	}

h2rd

class A:
    def __init__(self):
        print(u'конструктор класса A')

class B(A):
    def __init__(self):
        print(u'конструктор класса B')
        A.__init__(self)

h2rd

exports.serialize = function (obj) {
  var str = [];
  for (var p in obj) {
     str.push(encodeURIComponent(p) + "=" + encodeURIComponent(obj[p]));
  }
  return str.join("&");
};

h2rd

from os import path

print path.dirname(path.realpath(__file__))

h2rd

import chardet

def encode(string):
    if not string:
        return ''

    if not isinstance(string, unicode):
        encoding = chardet.detect(string)

        if not encoding['encoding']:

h2rd

#!/usr/bin/python
# -*- coding: utf-8 -*-

import os
import sys
import time
import signal

def termination_handler(signum, frame):
    global running

h2rd

use test

db.zips.aggregate({
  $group : {
    _id : { state: '$state', city: '$city'}
    , totalPop : { $sum: '$pop' }
  }
},{
  $match : {
    totalPop: {$gte : 25000},

h2rd

use test

db.zips.aggregate([
  { $project: {
    first_char: {$substr : ["$city",0,1]},
    pop: 1
  }
}, { $match: {
    first_char: /[0-9]/
  }

h2rd

use blog

db.posts.aggregate([
{ $unwind: "$comments" }
, { $group: {
    _id: "$comments.author"
    , total: {$sum: 1}
  }
}
, { $sort: { total: -1 } }

h2rd

use test

db.grades.aggregate([
{ $unwind: "$scores" }
, { $group: {
    _id: {
      type: "$scores.type"
      , score: "$scores.score"
      , class_id: "$class_id"
    }