jacobbubu

Source(read) 概述

Sink 对 Source 有两种请求:

1. read: 向 Source 请求数据，通过 read(null, currCb) 来请求。
2. abort: 通知 Source 终止当前的 stream，通过 read(endOrError, currCb) 来请求。endOrError 的类型是 true | Error，表示是一次正常的终止还是异常的终止。

对于 read 请求，Sink 应该基于 上一次的 read 请求回调了，再发起新的 read 请求这样的规则。 对于 abort 请求，由于有时 Source 也不知道何时需要 abort(出现了异常或者外部其他条件触发的)，因此可能在上一次 read 没有回调就发生。

• 对于 Sink 的 read 请求，如果”重入“(上一次 read 没有结束，新的 read 来了)，Source 完成实际资源的读取后，仅仅调用最后一个传入的 currCb 来传递数据。

craigdmckenna

import UUID

from sqlalchemy.dialects.mysql import BINARY
from sqlalchemy.types import TypeDecorator


class BinaryUUID(TypeDecorator):
    '''Optimize UUID keys. Store as 16 bit binary, retrieve as uuid.
    inspired by:
        http://mysqlserverteam.com/storing-uuid-values-in-mysql-tables/

jwhulette

<IfModule mod_rewrite.c>
    <IfModule mod_negotiation.c>
        Options -MultiViews
    </IfModule>

    RewriteEngine On

    # Force HTTPS - Proto needed for AWS ELB
    RewriteCond %{HTTP:X-Forwarded-Proto} !https
    RewriteCond %{HTTP_USER_AGENT} !^ELB-HealthChecker

sergeyklay

Here's how to test whether a parameter is unset, or empty ("Null") or set with a value:

+--------------------+----------------------+-----------------+-----------------+
|                    |       parameter      |     parameter   |    parameter    |
|                    |   Set and Not Null   |   Set But Null  |      Unset      |
+--------------------+----------------------+-----------------+-----------------+
| ${parameter:-word} | substitute parameter | substitute word | substitute word |
| ${parameter-word}  | substitute parameter | substitute null | substitute word |
| ${parameter:=word} | substitute parameter | assign word     | assign word     |
| ${parameter=word}  | substitute parameter | substitute null | assign word     |

ralphschindler

<?php

define('T', '    ');
define('N', PHP_EOL);

$functions = array();
$classes = array();
$constant_prefix = 'X_';

$php = '<?php' . N;

fhferreira

DDD, CQRS and Event Sourcing in PHP

• Broadway - Infrastructure and testing helpers for creating CQRS and event sourced applications
• EventCentric.Core - Event Sourcing and CQRS in PHP
• LiteCQRS - Small convention based CQRS library for PHP
• predaddy - Common DDD classes including an annotation driven message bus and tools for CQRS and Event Sourcing
• ProophEventSourcing - Provides basic functionality for event-sourced aggregates
• ProophEventStore - PHP 5.4+ EventStore Implementation
• ProophServiceBus - PHP Enterprise Service Bus Implementation supporting CQRS and DDD

raminfp

Installing Docker CE on Ubuntu 17.10 Artful Aardvark

As of 20/10/2017, a release file for Ubuntu 17.10 Artful Aardvark is not available on Download Docker.

sudo apt-get update
sudo apt-get install apt-transport-https ca-certificates curl software-properties-common
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
sudo apt-key fingerprint 0EBFCD88

olekhy

https://trac.ffmpeg.org/wiki/Capture/Desktop

ffmpeg -framerate 25 -video_size 1024x768 -f x11grab -i :0.0+100,200 -f alsa -ac 2 -i pulse -vcodec libx264 -crf 0 -preset ultrafast -acodec pcm_s16le output.mkv


losless

ffmpeg -video_size 1920x1080 -framerate 30 -f x11grab -i :0.0 -c:v libx264 -qp 0 -preset ultrafast capture.mkv

johnbellone

VAGRANT_HTTP_PROXY=$HTTP_PROXY
VAGRANT_HTTPS_PROXY=$HTTPS_PROXY
VAGRANT_NO_PROXY=$NO_PROXY

olekhy

Awesome PHP Libraries

A list of amazingly awesome PHP libraries that you should consider using (and some other shiny extras).

• Composer/Packagist - A package and dependency manager.
• Composer Installers - A multi framework Composer library installer.
• Symfony2 - A framework comprised of individual components.
• Zend Framework 2 - Another framework comprised of individual components.
• Laravel 4 - A simple PHP framework.
• Lithium - Another framework of components.