kitelife

# 周期数据统计函数
def stat_cycle_data(cycles):
    cycle_time_buckets = {}
    for cycle in cycles:
        if cycle.start_date:
            start_date = (
                int(cycle.start_date.strftime('%Y')), int(cycle.start_date.strftime('%m')))
        else:
            continue
        if cycle.end_date:

kitelife

<?php
/*
使用依赖注入重写我们的日志工厂
*/
class Log {
  protected $engine = false;
  
  public function add($message)
  {
    if ($this->engine) {

kitelife

<?php
class Log_Factory {
  public function getLog($type = 'file', array $options)
  {
    $type = strtolower($type);
    
    $class = "Log_" . ucfirst($type);
    require_once str_replace('_', DIRECTORY_SEPARATOR, $class) . '.php';
    
    $log = new $class($options);

kitelife

<?php
/*
当你使用单例模式第一次调用对象时，它就会被实例化（称为延迟加载），之后每一次调用都将返回同一个对象。
*/
class Database extends PDO {
  private static $_instance = null;
  
  private function __construct()
  {
    parent::__construct(APP_DB_DSN, APP_DB_USER, APP_DB_PASSWORD);

kitelife

<?php
/*
观察者模式的核心在于允许你的应用程序注册一个回调，当某个特定的事件发生时便会触发它。
*/
class Event {
  static protected $callbacks = array();
  
  static public function registerCallback($eventName, $callback)
  {
    if (!is_callable($callback)) {

kitelife

<?php
try {
  $db_conn = new PDO('mysql:host=localhost;dbname=recipes', 'php-user', 'secret');
} catch (PDOException $e) {
  echo "Could not connect to database";
  exit;
}

try {
  // start the transaction

kitelife

<?php
try {
  $db_conn = new PDO('mysql:host=localhost;dbname=recipes', 'php-user', 'secret');
} catch (PDOException $e) {
  echo "Could not connect to database";
  exit;
}

$sql = 'SELECT name, description, chef
        FROM receipes

kitelife

package main

import (
	"fmt"
)

type Stringer interface {
	String() string
}
type Printer interface {

kitelife

package main

import (
	"fmt"
)

type User struct {
	id   int
	name string
}

kitelife

type FileObj struct {
	name string
	size int
	attr struct {
		perm  int
		owner int
	}
}

func main() {