Kafka acts as a kind of write-ahead log (WAL) that records messages to a persistent store (disk) and allows subscribers to read and apply these changes to their own stores in a system appropriate time-frame.
Terminology:
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| extension Array { | |
| func first() -> Element? { | |
| if isEmpty { | |
| return nil | |
| } | |
| return self[0] | |
| } | |
| func last() -> Element? { |
Video recording: https://www.youtube.com/watch?v=E5_tL62mUbc
Over the years, I've started thinking that participating in the open source community is like traveling on a path, toward becoming not only better programmers, but also becoming better people by working together.
You might think of it as a path toward enlightenment, growing ourselves as human beings. So what follows is really my personal philosophy which I'd like to share with you.
The first thing is this: The most important part of every open source project is the people. While code is important, the center is always the people.
（ 淡入 一群身著制服，表情嚴肅的軍官。）
會議桌的主位上，一位資深高階 將軍 正在說話。
將軍：報告已經證實了，紐約市已經…被殭屍占領了。
上校：又來了？明明 28 天前才發生過一次殭屍入侵！
將軍：這些僵屍…不一樣。它們是… 哲學 僵屍。
| // | |
| // UIColor+RGB.swift | |
| // Copyright (c) 2014 Massimiliano Bigatti. All rights reserved. | |
| // | |
| import Foundation | |
| import UIKit | |
| /** | |
| UIColor extension that add a whole bunch of utility functions like: |
| import functools | |
| import time | |
| import threading | |
| import logging | |
| import Queue | |
| import hunspell | |
| import tornado.web | |
| import tornado.websocket | |
| import tornado.locale |
| #!/usr/bin/env ruby -wKU | |
| # Adapted from Brett Terpstra’s original “Markdown to Evernote” service (http://brettterpstra.com/a-better-os-x-system-service-for-evernote-notes-with-multimarkdown/) | |
| # Martin Kopischke 2011 – License: Creative Commons Attribution Share-Alike (CC BY-SA) 3.0 Unported (http://creativecommons.org/licenses/by-sa/3.0/) | |
| # Changes: – create only one Evernote note per (Multi)Markdown input passed (instead of one per line) | |
| # – do not choke on shell escape characters (use Tempfile instead of shell pipe for osascript) | |
| # – default to MultiMarkdown 3 executable (instead of MMD 2 Perl script) | |
| # – make smart typography processing optional (set SMARTY to 'false' to bypass processing; | |
| # note smart typography cannot be disabled in MMD 3.0 and 3.0.1 | |
| # – handle both smart typography processing scripts (ie. SmartyPants.pl) |
| #!/bin/sh | |
| # This assumes you have: | |
| # 1) A user called `hubot` in charge of the bot. | |
| # 2) A file called /home/hubot/.hubotrc that contains the Hubot credentials. | |
| # | |
| # To set the adapter either edit bin/hubot to specify what you want or append | |
| # `-- -a campfire` to the $DAEMON variable below. | |
| # | |
| ### BEGIN INIT INFO |
| # tested with hbase 0.19.3 and jython 2.2.1 | |
| import java.lang | |
| from org.apache.hadoop.hbase import HBaseConfiguration, HTableDescriptor, HColumnDescriptor, HConstants | |
| from org.apache.hadoop.hbase.client import HBaseAdmin, HTable | |
| from org.apache.hadoop.hbase.io import BatchUpdate, Cell, RowResult | |
| # First get a conf object. This will read in the configuration | |
| # that is out in your hbase-*.xml files such as location of the | |
| # hbase master node. |
